Laursen reached the final of the WDF World Cup in both single and pairs (with Brian Sorensen) in 2005 and won the Welsh Open earlier that year – performances which enabled him to qualify for the BDO World Darts Championship for the first time in 2006.
Laursen became the first Dane to play in the PDC World Darts Championship in the 2007 competition beating Colin Monk 3–0 (3–1, 3–2, 3–2) in the first round, but lost to Dennis Priestley in the second round, despite the fact that Laursen was 3–1 up and missed eight darts to win the match before losing 4–3 (2–3, 2–3, 3–2, 0–3, 3–0, 3–2, 3–1).
He came through the Danish Qualifying system for the second time for the 2008 PDC World Darts Championship but lost 3–1 (3–2, 1–3, 3–2, 3–1) to Alan Tabern in the first round.
Laursen has had some success in tournaments in his own country, reaching the final of the Danish Open in 2006 (losing to Vincent van der Voort) and winning the Danish National Championships in 2004, 2007 and 2008
Laursen once again represented his country in the 2009 PDC World Darts Championship, having finished top of the Danish Darts Standing for a third successive year. He was beaten 3–1 (2–3, 3–2, 3–1, 3–2) in the first round by Wes Newton.
At the 2010 PDC World Darts Championship Denmark had lost their direct place and Laursen, who had won the Danish qualification for the fourth time, had to qualify through the preliminary round but lost to Christian Perez of the Philippines.
Laursen qualified for the preliminary round of the 2011 World Championship, beating Boris Krcmar from Croatia 4–2 (legs).
In the first round he played three-time world champion John Part and won 3–0 (3–2, 3–1, 3–2) to set up a second round match with defending champion Phil Taylor- a match he lost 4–0 (3–1, 3–2, 3–0, 3–1) despite averaging 93.19.
Laursen played in his third World Cup of Darts and second with Jann Hoffmann in February 2013 and despite beating South Africa 5–4 in their first match, they finished bottom of Group B on leg difference following a 0–5 loss to the Republic of Ireland.[5]
Laursen won two events on the Scandinavian Pro Tour during 2013 and was a losing finalist in two others to finish top of the Order of Merit and qualify for the 2014 World Championship, where he beat Colin McGarry 4–2 in the preliminary round.[6] He then defied a nine-dart finish from Terry Jenkins in the deciding set of the first round to win 3–2, but saw his run come to an end in the next round as he lost 4–2 to Peter Wright.[7][8]
In January 2014, Laursen received a Tour card for the 2014 PDC Tour by topping last year's Scandinavian Order of Merit. Laursen and Dennis Lindskjold lost 5–2 to Australia in the first round of the World Cup of Darts.[9] Despite being eligible to participate in all PDC events, Laursen only played in Scandinavian tournaments during the year, winning the first Danish event by beating Daniel Larsson 6–2.[10] He won two events on the 2015 Scandinavian Darts Corporation Pro Tour to finish second on the Order of Merit and seal his place in the preliminary round of the 2016 World Championship and a meeting with Andy Boulton which went to a deciding set.[11] Laursen went two legs to none up, but then missed four match darts and would lose 2–1.[12] He won the first Scandinavian Pro Tour event of 2016 and also lost in the final of the penultimate event.[13]
Laursen and Daniel Jensen played Australia in the second round of the World Cup after beating Sweden 5–2. Laursen overcame Kyle Anderson 4–2 to send the match into a doubles decider in which Denmark were whitewashed 4–0.[14]