The Grand Slam in tennis is the achievement of winning all four major championships in one discipline in a calendar year. In doubles, a Grand Slam may be achieved as a team or as an individual with different partners. Winning all four major championships consecutively but not within the same calendar year is referred to as a "non-calendar-year Grand Slam", while winning the four majors at any point during the course of a career is known as a "Career Grand Slam".[1][2]
The term Grand Slam is also attributed to the Grand Slam tournaments, usually referred to as Majors, and they are the world's four most important annual professional tennis tournaments. They offer the most ranking points, prize money, public and media attention, the greatest strength and size of the field and, in recent years, the longest matches for men (best of five sets, best of three for the women). The tournaments are overseen by the International Tennis Federation (ITF),[3] rather than the separate men's and women's tour organizing bodies, the Association of Tennis Professionals (ATP) and Women's Tennis Association (WTA), but both the ATP and WTA award ranking points based on players' performances in them.[4]
The four Grand Slam tournaments are the Australian Open in January, the French Open from late May to early June, Wimbledon in late June to early July, and the US Open in late August to early September, with each played over two weeks. The Australian and the United States tournaments are played on hard courts, the French on clay, and Wimbledon on grass. Wimbledon is the oldest tournament, founded in 1877, followed by the US in 1881, the French in 1891 (major in 1925), and the Australian in 1905, but it was not until 1925 that all four were held as officially sanctioned majors.[5]
History
US Open
Wimbledon
French Open
Australian Open
The locations of the four major championships.
With the growing popularity of tennis, and with the hopes of unifying the sport's rules internationally,[5] the British and French tennis associations started discussions at their Davis Cup tie, and in October 1912 organized a meeting in Paris, joined by the Australasian, Austrian, Belgian, Spanish, and Swiss associations.[6] They subsequently formed the International Lawn Tennis Federation (ILTF), holding their first meeting in 1913, joined by the Danish, German, Dutch, Russian, South African, and Swedish organizations.[7] Voting rights were divided based on the perceived importance of the individual countries, with Great Britain's Lawn Tennis Association (LTA) receiving the maximum six votes.[8] Three tournaments were established, being designated as "World Championships":
The LTA was given the perpetual right to organize the World Grass Court Championships, to be held at Wimbledon, and France received permission to stage the World Hard Court Championships until 1916.[10]Anthony Wilding of New Zealand won all three of these World Championships in 1913.[11]
The United States National Lawn Tennis Association (USNLTA) expressed disagreement over the power distribution within the ILTF and the designation of "World Championship" status to the British and French tournaments, and thus initially refused to join the Federation, choosing instead to be bystanders to their meetings.[12][7] By the 1920s, with the World Covered Court Championships failing to attract top players and the growing success of American and Australian tennis, the ILTF worked to convince the USNLTA to join them, meeting their demand to drop the designation of "World Championships" from all three tournaments in March 1923, which led to the demise of both the World Covered Court Championships and the World Hard Court Championships.[9][13] A new category of "Official Championships" was created for the national championships of Britain, France, Australia, and the US.[14][15] By the 1930s, these four tournaments had become well defined as the most prestigious in the sport.[16]
In 1933, Jack Crawford won the Australian, French, and Wimbledon Championships, leaving him just needing to win the last major event of the year, the U.S. Championships, to become the reigning champion of all four major tournaments,[17] a feat described as "a grand slam" by sports columnist Alan J. Gould of The Reading Eagle,[18] and later that year by John Kieran of The New York Times, who stated that if Crawford won at Forest Hills it "would be something like scoring a grand slam on the courts, doubled and vulnerable."[19][20] The term 'Grand Slam' originates from the card game contract bridge, where it is used for winning all possible tricks. In golf it was used for the first time to describe a total of four wins, specifically Bobby Jones' achievement of winning the four major golf tournaments of the era, which he accomplished in 1930.[20] "Grand Slam" or "Slam" has since also become used to refer to the tournaments individually.[4] The first player to win all four majors in a calendar year and thus complete a Grand Slam was Don Budge in 1938.[21]
At the time, only amateur players were allowed to participate in the Grand Slam and other ILTF-sanctioned tournaments.[22] Amateur standing, regulated by the ILTF alongside its associated national federations, forbade players from receiving prize money, earning pay by teaching tennis, being contracted by promoters and playing paid exhibition matches, though expense payments were allowed along with certain monies from sporting goods companies or other benefactors.[22] Amateurs who "defected" to become professional were banned from competing in amateur tournaments and dropped from their national associations. The first major professional tour was established in 1926 by promoter C. C. Pyle with a troupe of American and French players, most notably Suzanne Lenglen, playing exhibition matches to paying audiences.[22][23] Over the next decades many other head-to-head tours were run and professional tournaments established,[24] with three, the U.S. Pro Tennis Championships, French Pro Championship and Wembley Championships, standing out, and considered to have been the professional majors.[25] By the 1950s, largely due to efforts of player/promoter Jack Kramer, this lucrative parallel circuit was luring in most of the star amateurs on the men's side, much to the ire of the ILTF and organizers of the Grand Slam tournaments.[26] It was an open secret that the top players who remained as amateurs were receiving undeclared under-the-table payments from tournament promoters, an arrangement tolerated by their national tennis associations to dissuade them from joining the pro ranks and secure their availability for the majors and Davis Cup. This system was derisively referred to as 'shamateurism'[27] that was seen as undermining the integrity of the sport.[28]Ramanathan Krishnan and Roy Emerson, for example declined large contract offers from the professional promoters, with the latter stating that he was better paid in the amateur circuit.[29]
Tensions over this status quo, which had been building for decades, finally came to a head in 1967. The first tournament open to professional tennis players played on Centre Court at Wimbledon, the Wimbledon Pro, was staged by the All England Lawn Tennis Club in August,[30] offering a prize fund of US$45,000.[31] The tournament was deemed very successful, with packed crowds and the play seen as being of higher quality than the amateur-only Wimbledon final held two weeks earlier.[32][33] This success in combination with large signings of top players to two new professional tours—World Championship Tennis and the National Tennis League—convinced the LTA on the need for open tennis.[28] After a British proposal for this at the annual ILTF meeting was voted down, the LTA revolted, and in its own annual meeting in December it voted overwhelmingly to admit players of all statuses to the 1968 Wimbledon Championships and other future tournaments in Britain, "come hell or high water".[34] The eventual backing of the USNLTA that came after a February 1968 vote forced the ILTF to yield and allow each nation to determine its own legislation regarding amateur and professional players, which it voted for in a special meeting in March 1968.[35] This marked the start of the Open Era of tennis,[28] with its first tournament, the 1968 British Hard Court Championships, beginning three weeks later on 22 April in Bournemouth, England,[36] while the first open Grand Slam tournament, the 1968 French Open, was held in May.[28]
Even after the advent of the Open Era, players including John McEnroe and Chris Evert have pointed out that skipping the Australian Open was the norm because of the travelling distance involved and the inconvenient dates close to Christmas and New Year.[37][38] There were also the contracted professional players who had to skip some major events like the French Open in the 1970s because they were committed to the more profitable pro circuits.[38][39] In one case, Australian players including Rod Laver, Ken Rosewall and Roy Emerson who had contracts with George MacCall's National Tennis League were prevented from participating in the 1970 Australian Open because the financial guarantees were deemed insufficient.[40]
Although it has been possible to complete a Grand Slam in most years and most disciplines since 1925, it was not possible from 1940 to 1945 because of interruptions at Wimbledon, the Australian and French Championships due to World War II,[41] the years from 1970 to 1985 when there was no Australian tournament in mixed doubles,[42] 1986 when there was no Australian Open,[42] and 2020 when Wimbledon was cancelled due to the COVID-19 pandemic.[43]
Tournaments
The Grand Slam of tennis comprises these four major tournaments:
The Australian Open is the first Grand Slam tournament of the year, played annually in late January and early February.[k][47] The inaugural edition took place in November 1905 on the grass courts of the Warehouseman's Cricket Ground in Melbourne, Australia. It was held as the Australasian Championships until 1927 and thereafter as the Australian Championships until the onset of the Open Era in 1969,[48] passing through various venues in Australia and New Zealand before settling at the Kooyong Lawn Tennis Club in Melbourne between 1972 and 1987.[49] Since 1988, it has been played on the hard courts of the Melbourne Park sports complex, which currently uses GreenSet as its court manufacturer.[50]
Managed by Tennis Australia, formerly the Lawn Tennis Association of Australia (LTAA), the tournament struggled until the mid-1980s to attract the top international players due to its distance from Europe and America and proximity to the Christmas and holiday season,[51][52] but it has since grown to become one of the biggest sporting events in the Southern Hemisphere and the highest attended Grand Slam tournament, with more than 1,020,000 people attending the 2024 edition.[53]
Nicknamed the "Happy Slam"[54] and billed as "the Grand Slam of Asia/Pacific",[55] it has become known for its modernity and innovation, being the first Grand Slam tournament to feature indoor play and install retractable roofs on its main courts,[56] the first to schedule night-time men's singles finals,[57] and the first to substitute electronic line calling for line judges, using an expanded version of the Hawk-Eye technology known as "Hawk-Eye Live".[58]
The tournament was designated a major championship by the International Lawn Tennis Federation in 1923.[59] Nowadays, its draws host 256 singles players, 128 doubles teams and 32 mixed doubles teams, with the total prize money for the 2024 tournament being A$86,500,000.[60]
The French Open, also known as Roland Garros,[61][62] is the second Grand Slam tournament of the year, played annually in late May and early June.[63] A French championships closed event (restricted to members of French clubs)[64] was first held in 1891 on the sand courts of the Societé de Sport de Île de Puteaux, in Puteaux, Île-de-France,[65][l] and changed venues over the years. In 1925 the French championships became open to all amateurs and since 1928 has been held on clay courts at the Stade Roland-Garros in Paris, France.[64][67] Both the venue and the tournament are named "Roland Garros" after the pioneering French aviator.[64]
Organized by the Fédération française de tennis (FFT), formerly known as the Fédération Française de Lawn Tennis until 1976,[68] the French Open is the only Grand Slam tournament played on a red clay surface.[69] It is generally considered to be the most physically demanding tennis tournament in the world.[70][71]
The World Hard Court Championships was considered the premier clay championship in France from 1912–1923 (apart from one year held in Belgium) as it admitted international competitors, and it is therefore often seen as the true precursor to the French Open before 1925.[13][72] The French championships was first held as an International Lawn Tennis Federation–sanctioned major championship in 1925.[73]
Today, it has draws that host 256 singles players, 128 doubles teams and 32 mixed doubles teams, with the total prize money for the 2024 tournament being €53,478,000.[45] The 2018 edition saw a record attendance of 480,575 spectators.[74]
The Wimbledon Championships, commonly known as Wimbledon,[75] is the third Grand Slam tournament of the year, played annually in late June and early July.[76] It was first held in 1877 at the All England Lawn Tennis and Croquet Club, at the time located off Nursery Road in Wimbledon, London, England.[77] The tournament has always been contested at this club, which moved to its present site off Church Road in 1922 in order to increase its attendance capacity.[78]
Wimbledon is organized by a committee of management consisting of nineteen members, with twelve being club members and the remaining seven nominated by the Lawn Tennis Association (LTA).[79][80] As the world's oldest tennis event,[81] it is widely regarded as the most prestigious tennis tournament,[82] and it is known for its commitment to longstanding traditions and guidelines.[83] It is one of few tournaments and the only Grand Slam event that is still played on grass courts,[84] tennis's original surface, and where "lawn tennis" originated in the 1800s.[85] Players are required to wear all-white attire during matches,[86] and they are referred to as "Gentlemen" and "Ladies".[87] There is also a tradition where the players are asked to bow or curtsy towards the Royal Box upon entering or leaving Centre Court when either the Prince of Wales or the monarch are present.[88]
The tournament was given the title "World Grass Court Championships" by the International Lawn Tennis Federation between 1912 and 1923,[89] and was designated a major championship following the abolition of the three ILTF World Championships.[59] Since 1937, the BBC has broadcast the tournament on television in the United Kingdom,[90] with the finals shown live and in full on television in the country each year.[91] The BBC's broadcast of the 1967 edition was among the first colour television broadcasts in the UK.[92]
Today, the event has draws that host 256 singles players, 128 doubles teams and 32 mixed doubles teams, with the total prize money for the 2021 tournament being £35,016,000,[93] and 500,397 people attending the 2019 edition.[94] The tournament has some of the longest running sponsorships in sports history, having been associated with Slazenger since 1902,[95] and with the Robinsons fruit drink brand since 1935.[96]
Organized by the United States Tennis Association (USTA),[100] previously known as the United States National Lawn Tennis Association (USNLTA) until 1920,[101] and as United States National Lawn Tennis Association (USLTA) until 1975,[102] it is the only Grand Slam tournament to have been played every year since its inception.[103] In 1997, Arthur Ashe Stadium, the largest tennis stadium in the world with a capacity of 23,771 spectators,[104][105] was opened.[106] It is named after Arthur Ashe, the winner of the 1968 tournament—the first in which professionals were allowed to compete.[107]
Over the years, the tournament has pioneered changes that other tournaments later adopted, including the introduction of a tiebreak system to decide the outcome of sets tied at 6–6 in 1970,[7] being the first Grand Slam tournament to award equal prize money to the men's and women's events in 1975,[7] the installation of floodlights in 1975 in order to allow matches to be played at night,[108] and the introduction of instant replay reviews of line calls using the Hawk-Eye computer system in 2006.[109]
The ILTF officially designated it as a major tournament in 1923.[9] Today, the event has draws that host 256 singles players, 128 doubles teams and 32 mixed doubles teams, with the total prize money for the 2020 tournament being US$53,400,000,[110] and a US television viewership of 700,000.[111][112] From 2004-2023, the tournament was preceded by the US Open Series, composed of North American hardcourt professional tournaments that lead up to and culminate with the US Open itself.[113] The season was organized by the USTA as a way to focus more attention on American tennis tournaments by getting more of them on domestic television.[46]
A Grand Slam (sometimes called a Calendar-year Grand Slam, Calendar Grand Slam, or Calendar Slam) is the achievement of winning the Australian Open, French Open, Wimbledon, and US Open in the same year.[114][115][116]Margaret Court is the only player to complete a Grand Slam in two disciplines, singles and mixed doubles (twice), while wheelchair players Diede de Groot and Dylan Alcott have completed one in both the singles and doubles disciplines of their respective classes.[1]
The following is a list of players that achieved it.[1]
In 1982, the International Tennis Federation (ITF) began offering a $1 million bonus to any singles player to win the four majors consecutively regardless the tournaments order of winning them while the Men's International Professional Tennis Council, which was the governing body of men's professional tennis at the time, stated that 'Grand Slam' need not necessarily be won in the same year. This revision by the Council and reportedly the ITF[138] was approved by the representatives of the four Grand Slam tournaments at Wimbledon.[139][140] Neil Amdur and Allison Danzig of the New York Times both criticised the changed definition of the term Grand Slam,[140] whereas in 1985 Hal Bock of Associated Press backed the change.[141]
Despite newspaper reports claiming that ITF President Philippe Chatrier had said "the four big events no longer have to be won in the same calendar year for a player to be recognized as Grand Slam champion",[138] ITF General Secretary David Gray in a 1983 letter claimed that it was never the intention of ITF to alter anything regarding the definition of the classic Grand Slam:[142]
There seems to be some confusion. The ITF's only initiative in this matter has been the organisation of the offer of a bonus of $1 million to any player who holds all four Grand Slam titles simultaneously ... Despite all that we have read on this matter, it has never been my Committee of Management's intention to alter the basis of the classic Grand Slam i.e., the capture of all four titles in a year.
When Martina Navratilova won the 1984 French Open and became the reigning champion of all four women's singles discipline, she was the first player to receive the bonus prize in recognition of her achievement. Some media outlets said that she had won a Grand Slam.[143][144] Curry Kirkpatrick of Sports Illustrated wrote "Whether the Slam was Grand or Bland or a commercial sham tainted with an asterisk the size of a tennis ball, Martina Navratilova finally did it."[145]
When Rafael Nadal was on the verge of completing a non-calendar-year Grand Slam at the 2011 Australian Open, one writer observed, "Most traditionalists insist that the 'Grand Slam' should refer only to winning all four titles in a calendar year, although the constitution of the International Tennis Federation, the sports governing body, spells out that 'players who hold all four of these titles at the same time achieve the Grand Slam'."[146] In 2012 the ambiguity was resolved, with the ITF's current constitution stating "The Grand Slam titles are the championships of Australia, France, the United States of America and Wimbledon. Players who hold all four of these titles in one calendar year achieve the 'Grand Slam'."[1]
The following list is for those players who achieved a non-calendar-year Grand Slam by holding the four major titles at the same time but not in the calendar year.[1] Players who completed a Grand Slam within the same streak as a non-calendar-year Grand Slam are not included here.
Only six players have completed a Career Grand Slam in both singles and doubles: one male (Roy Emerson) and five females (Margaret Court, Doris Hart, Shirley Fry Irvin, Martina Navratilova, and Serena Williams).
Number of players to complete the Career Grand Slam
A "Boxed Set" refers to winning one of every possible major title in the singles, doubles, and mixed doubles disciplines throughout a player's career.[153] Only three players have completed a Boxed Set, all females: Doris Hart, Margaret Court, and Martina Navratilova.[154] Court's second Boxed Set, completed in 1969, spans the Amateur and Open Eras, but she later completed a set entirely within the Open Era in 1973.[152]
The event at which the Boxed Set was completed indicated in bold.
The term "Golden Slam" (also known as "Golden Grand Slam",[155][156][157] "Calendar-year Golden Slam"[158] or "Calendar Golden Slam")[159] refers to the achievement of winning all four majors and the Olympic or Paralympic gold medal in a calendar year. The achievement was first established in 1988,[160][161] when Steffi Graf won all the aforementioned titles in singles. She is currently the only singles able-bodied player to achieve it,[162][163] while Diede de Groot and Dylan Alcott also accomplished the feat, in wheelchair singles and wheelchair quad singles respectively.[164][165]
Non-calendar-year Golden Slam: refers to the achievement of winning all four majors and the Olympic or Paralympic gold medal consecutively across two calendar years.[166] It has been used since 2013, when Bob and Mike Bryan won the aforementioned titles consecutively in doubles between 2012 and 2013.[167] Their achievement was also dubbed the "Golden Bryan Slam".[168]
Career Golden Slam: refers to the achievement of winning all four majors and the Olympic or Paralympic gold medal during their career.[169][166]
Number of players to complete the Career Golden Slam
Non-calendar-year Super Slam: refers to the achievement of winning all four majors, the Olympic or Paralympic gold medal, and the year-end championship consecutively across two calendar years.[173]Steffi Graf is currently the only one to achieve it, with her Golden Slam in 1988 following her victory at the year-end championship in 1987.[173][174]
Career Super Slam: refers to the achievement of winning all four majors, the Olympic or Paralympic gold medal, and the year-end championship throughout a career.[175][176]
Number of players to complete the Career Super Slam
Three-Quarter Slam: refers to the achievement of winning three of the four majors in a calendar year, missing out on the Grand Slam by only one title.[177][178][179]
Number of players to complete the Three-Quarter Slam
Surface Slam: refers to the achievement of winning a major title on each of three current surfaces (clay, grass and hard courts) in a calendar year.[180][181] It's been possible since 1978, when the US Open changed its playing surface from clay to hard courts.[182][183] From 1978 to 1987, the Australian Open and Wimbledon were played on grass, the French Open on clay and the US Open on hard, but since 1988 the Australian Open has also been played on hard courts.[184]
Channel Slam: refers to the achievement of winning both the French Open and Wimbledon in a calendar year.[185] The name makes reference to the English Channel, the body of water separating France from the United Kingdom, the host countries of the French Open and Wimbledon.[185] These tournaments are held clay and grass courts, respectively, surfaces very different from each other,[69] usually being held a few weeks from each other,[185] meaning that players who have deep runs in the French Open have little time to adapt to the different surface conditions found at Wimbledon.[186][187]
Before the start of the Open Era in 1968, only amateur players were allowed to compete in the four Grand Slam tournaments. Many male top players "went pro" in order to win prize money legally, competing on a professional world tour comprising completely separate events.[188] From 1927 to 1967, the three tournaments considered by many to have been the "majors" of the professional tour were:
A player who won all three in a calendar year was considered retrospectively to have achieved a "Professional Grand Slam", or "Pro Slam".[189][190] In the pre-open era the terms did not exist. The feat was accomplished by Ken Rosewall in 1963[191] and Rod Laver in 1967,[192] while Ellsworth Vines, Hans Nüsslein and Don Budge have won the three major trophies during their careers.[193] The professional majors did not have a women's draw except for the Cleveland tournament in 1953, 1955, 1956, 1959.[194][195][196]
^Gould, Alan (18 July 1933). "Sports Slants: Tennis "Grand Slam"". The Reading Eagle. p. 10. Archived from the original on 27 May 2016. Retrieved 2 September 2021. Tennis 'Grand Slam': Crawford, now holder of the Australian, French and British singles title, has the chance for a 'grand slam' by coming over for the United States championships at Forest Hills in September.
^Kieran, John (2 September 1933). "Coming Up to the Net". The New York Times. p. 9. Archived from the original on 2 September 2021. Retrieved 2 September 2021. Jack Crawford, the Australian, has the most impressive record so far this year. He defeated Cochet in France for the French hard-court championship. He won at Wimbledon. He holds the Australian title. If he wins at Forest Hills, he will have captured about everything in sight for the year. That would be something like scoring a grand slam on the courts, doubled and vulnerable.
^Henderson, Jon (15 June 2008). "Now I'd choose tennis". The Observer. Archived from the original on 10 July 2017. Retrieved 12 March 2022. 'Yes, "open" tennis has come at last and Bournemouth has been entrusted with the task of a world shaking launching,' said the programme notes for the 1968 Hard Court Championships of Great Britain, which brought an end to the sport's segregation of amateur and professional players.
^"John McEnroe". Charlie Rose. 2 April 1999. 11:49 minutes in. PBS. Retrieved 30 August 2021. I don't think people realize and put in perspective [that] [t]he Australian Open has come a long way. [U]ntil 1985, for example, they were offering me guarantees to play the tournament. You had to beg the top players to play. What changed it was that they did a better promotional job. They put money into a new stadium and things of that nature. ... When people don't realize that Borg played once his entire career. I didn't play the first seven years of my career. Connors only played once. Gerulaitis, God rest his soul, only played a couple of times. There's not a history of the people supporting the event until the late '80s. Now, I give them a lot of credit for bringing the level up as well as the French Open. But I think that people have to put this in perspective.
^Carp, Steve (20 November 2008). "Las Vegas Review-Journal". Las Vegas Review-Journal. Archived from the original on 8 June 2011. Retrieved 11 September 2021.
^Will Kaufman & Heidi Slettedahl Macpherson, ed. (2005). "Tennis". Britain and the Americas. Vol. 1 : Culture, Politics, and History. ABC-CLIO. p. 958. ISBN1-85109-431-8. this first tennis championship, which later evolved into the Wimbledon Tournament ... continues as the world's most prestigious event.
^Shmerler, Cindy (20 August 2018). "What's New, and What's Free, at the 2018 U.S. Open". The New York Times. Archived from the original on 7 September 2021. Retrieved 11 September 2021. The new stadium has the tournament's second retractable roof, after one was added over the 23,771-seat Arthur Ashe Stadium in 2016.
^"Ashe & Armstrong Stadiums". United States Tennis Association's official website. 3 May 2005. Archived from the original on 16 November 2005. Retrieved 30 June 2005.
^Williams, Daniel (11 January 2007). "Australian Open Preview". Time. Archived from the original on 7 September 2021. Retrieved 1 March 2021. As seen at last year's U.S. Open and numerous events since, this is the best innovation in tennis since yellow balls.
^"Dubbeltitel US Open voor Van Koot en Griffioen". 9 September 2013. Retrieved 27 August 2024 – via pers.nocnsf.nl. For Van Koot and Griffioen, the victory in New York means that they have won all Grand Slam tournaments this year Also at the Australian Open, Roland Garros and Wimbledon, the women's doubles title went to the Dutch pair With that, they have completed the so-called 'Grand Slam'
^"Wheelchair tennis". 8 September 2014. Retrieved 27 August 2024 – via paralympic.org.
^"Margaret Court: "Women's tennis is a little bit boring"". BBC. Archived from the original on 28 May 2023. Retrieved 9 March 2024. Margaret Court is one of only three players to have achieved a career "boxed set" of Grand Slam titles, winning every possible Grand Slam title – singles, women's doubles, and mixed doubles – at all four Grand Slam events. The others are Doris Hart and Martina Navratilova – but Court believes she missed opportunities".
^"Graf's feat is a true Grand Slam". Raleigh News and Observer. Sports. 12 September 1988. p. 16.
^ abc"First wheelchair tennis player to complete a "Career Super Slam" in singles". Guinness World Records. 3 September 2021. Archived from the original on 16 June 2024. Retrieved 16 June 2024. For good measure, she won all four majors again in 2021, plus Paralympic gold to complete an unprecedented calendar-year "Golden Slam", and rounded off 2021 with her fourth Masters win for professional tennis' first-ever calendar-year "Super Slam".
^"#7: Andre Agassi". Sports Illustrated. Photo Gallery: Top 10 Men's Tennis Players of All Time. 9 July 2012. p. 4. Archived from the original on 10 April 2022. Retrieved 21 December 2013.
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