| Alex Knaff | |
| Birth Date: | 1997 11, df=yes |
| Birth Place: | Luxembourg City, Luxembourg |
| Height: | 6'4"(193cm) |
| Coach: | Gilles Müller |
| Plays: | Right-handed (two-handed backhand) |
| College: | Florida State |
| Careerprizemoney: | $24,067 |
| Singlesrecord: | 2–6 (at ATP Tour level, Grand Slam level, and in Davis Cup) |
| Singlestitles: | 0 0 Challenger, 2 Futures |
| Highestsinglesranking: | No. 486 (11 September 2023) |
| Doublesrecord: | 4–2 (at ATP Tour level, Grand Slam level, and in Davis Cup) |
| Doublestitles: | 0 0 Challenger, 7 Futures |
| Highestdoublesranking: | No. 364 (11 September 2023) |
| Updated: | 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]
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| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
|---|---|---|---|---|---|---|---|
| Loss | 0–1 |  Mexico M15, Cancun | World Tennis Tour | Hard |  Brandon Holt | 1–6, 2–6 | |
| Win | 1–1 | USA M15, Tallahassee | World Tennis Tour | Hard | William Grant | 6–3, 6–0 | |
| Win | 2–1 |  Luxembourg M25, Esch-sur-Alzette | World Tennis Tour | Clay | Marlon Vankan | 6–3, 6–1 | |
| Loss | 2–2 |  Egypt M15, Sharm El Sheikh | World Tennis Tour | Hard | Mohamed Safwat | 4–6, 4–6 | |
|
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score | |
|---|---|---|---|---|---|---|---|---|---|
| Loss | 0–1 | United States M15, Ithaca | World Tennis Tour | Hard |  Joshua Peck | Vasil Kirkov Luke Johnson | 6–7(3–7), 3–6 | ||
| Loss | 0–2 |  Tunisia M15, Monastir | World Tennis Tour | Hard | Aziz Dougaz |  Hanwen Li Mateo Nicolas Martinez | 1–6, 6–2, 8-10 | ||
| Win | 1–2 | Tunisia M15, Monastir | World Tennis Tour | Hard | Aziz Dougaz |  Tomohiro Masabayashi Ren Nakamura | 6–2, 6–4 | ||
| Loss | 1-3 | United States M15, Sunrise | World Tennis Tour | Clay | Alec Deckers |  Alexander CozbinovRuan Roelofse | 4–6, 4–6 | ||
| Win | 2-3 |  Belgium M15, Duffel | World Tennis Tour | Clay | Chris Rodesch | Franco Emanuel Egea Marcelo Zormann | 6–1, 6–4 | ||
| Win | 3-3 | Luxembourg M25, Esch-sur-Alzette | World Tennis Tour | Clay | Chris Rodesch | Raphael Calzi Marlon Vankan | 6–1, 6–4 | ||
| Win | 4-3 |  Manacor M25, Manacor | World Tennis Tour | Hard |  Filip Bergevi | Alberto Barroso Campos Imanol López Morillo | 3–6, 6–3, 16-14 | ||
| Loss | 4-4 | Sharm El Sheikh M15, Sharm El Sheikh | World Tennis Tour | Hard | Jakob Schnaitter |  Lukas Pokorny Saba Purtseladze | 3–4, 4–6 | ||
| Loss | 4-5 | 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 | Pazardzhik M15, Pazardzhik | World Tennis Tour | Clay |  Corentin Denolly |  Riccardo Balzerani Artsiom Sinitsyn | 6-0, 6-0 | ||
| Win | 6-5 | Luxembourg M25, Esch-sur-Alzette | World Tennis Tour | Clay | Chris Rodesch | Dimitris Sakellaridis Stefanos Sakellaridis | 6-3, 6-4 | ||
| Win | 7-5 | Luxembourg M25, Esch-sur-Alzette | World Tennis Tour | Clay |  David Pichler | Dimitris Sakellaridis Stefanos Sakellaridis | 1-6, 6-1, 12-10 | ||
| Loss | 7-6 | Villena M15, Villena | World Tennis Tour | Hard |  Adrià Soriano Barrera | Liam Gavrielides Alejo Sanchez Quilez | 2-6, 4-6 | ||
| Loss | 7-7 | Torello M15, Torello | World Tennis Tour | Hard | Niklas Schell | James Davis Giles Hussey | 1-6, 2-6 |