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Alex Knaff
Country (sports)	Luxembourg
Born	26 November 1997 (age 27); Luxembourg City, Luxembourg
Height	6 ft 4 in(193cm)
Plays	Right-handed (two-handed backhand)
College	Florida State
Coach	Gilles Müller
Prize money	$24,067
Singles
Career record	2–6 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles	0 ; 0 Challenger, 2 Futures
Highest ranking	No. 486 (11 September 2023)
Doubles
Career record	4–2 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles	0 ; 0 Challenger, 7 Futures
Highest ranking	No. 364 (11 September 2023)
	Last updated on: 30 October 2023.

Alex Knaff (born 26 November 1997) is a Luxembourgish tennis player.

Knaff has a career high ATP singles ranking of 486 achieved on 11 September 2023. He also has a career high ATP doubles ranking of 364 achieved on 11 September 2023.

Knaff represents Luxembourg at the Davis Cup since 2015, where he has a W/L record of 12–10.

Knaff played college tennis at Florida State University.^[1]

Future and Challenger finals

Singles 4 (2–2)

Legend (singles)
ITF Futures Tour (2–2)

Titles by surface
Hard (1–2)
Clay (1–0)
Grass (0–0)
Carpet (0–0)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	May 2022	Mexico M15, Cancun	World Tennis Tour	Hard	Brandon Holt	1–6, 2–6
Win	1–1	Oct 2022	USA M15, Tallahassee	World Tennis Tour	Hard	William Grant	6–3, 6–0
Win	2–1	July 2023	Luxembourg M25, Esch-sur-Alzette	World Tennis Tour	Clay	Marlon Vankan	6–3, 6–1
Loss	2–2	October 2023	Egypt M15, Sharm El Sheikh	World Tennis Tour	Hard	Mohamed Safwat	4–6, 4–6

Doubles 14 (7–7)

Legend (doubles)
ITF Futures Tour (7–6)

Titles by surface
Hard (2–5)
Clay (4–1)
Grass (0–0)
Carpet (0–0)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	0–1	Nov 2021	United States M15, Ithaca	World Tennis Tour	Hard	Joshua Peck	Vasil Kirkov Luke Johnson	6–7^(3–7), 3–6
Loss	0–2	Mar 2022	Tunisia M15, Monastir	World Tennis Tour	Hard	Aziz Dougaz	Hanwen Li Mateo Nicolas Martinez	1–6, 6–2, 8-10
Win	1–2	Mar 2022	Tunisia M15, Monastir	World Tennis Tour	Hard	Aziz Dougaz	Tomohiro Masabayashi Ren Nakamura	6–2, 6–4
Loss	1-3	Apr 2022	United States M15, Sunrise	World Tennis Tour	Clay	Alec Deckers	Alexander Cozbinov Ruan Roelofse	4–6, 4–6
Win	2-3	Jun 2022	Belgium M15, Duffel	World Tennis Tour	Clay	Chris Rodesch	Franco Emanuel Egea Marcelo Zormann	6–1, 6–4
Win	3-3	Jul 2022	Luxembourg M25, Esch-sur-Alzette	World Tennis Tour	Clay	Chris Rodesch	Raphael Calzi Marlon Vankan	6–1, 6–4
Win	4-3	Jan 2023	Manacor M25, Manacor	World Tennis Tour	Hard	Filip Bergevi	Alberto Barroso Campos Imanol López Morillo	3–6, 6–3, 16-14
Loss	4-4	Mar 2023	Sharm El Sheikh M15, Sharm El Sheikh	World Tennis Tour	Hard	Jakob Schnaitter	Lukas Pokorny Saba Purtseladze	3–4, 4–6
Loss	4-5	Mar 2023	Sharm El Sheikh M15, Sharm El Sheikh	World Tennis Tour	Hard	Jakob Schnaitter	Alec Beckley Petr Nesterov	6-3, 3-6, 8-10
Win	5-5	May 2023	Pazardzhik M15, Pazardzhik	World Tennis Tour	Clay	Corentin Denolly	Riccardo Balzerani Artsiom Sinitsyn	6-0, 6-0
Win	6-5	July 2023	Luxembourg M25, Esch-sur-Alzette	World Tennis Tour	Clay	Chris Rodesch	Dimitris Sakellaridis Stefanos Sakellaridis	6-3, 6-4
Win	7-5	July 2023	Luxembourg M25, Esch-sur-Alzette	World Tennis Tour	Clay	David Pichler	Dimitris Sakellaridis Stefanos Sakellaridis	1-6, 6-1, 12-10
Loss	7-6	Feb 2024	Villena M15, Villena	World Tennis Tour	Hard	Adrià Soriano Barrera	Liam Gavrielides Alejo Sanchez Quilez	2-6, 4-6
Loss	7-7	Mar 2024	Torello M15, Torello	World Tennis Tour	Hard	Niklas Schell	James Davis Giles Hussey	1-6, 2-6