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 (3-3)
| Legend (singles) |
| ITF Futures Tour (3-3) |
|
| Titles by surface |
| Hard (2–3) |
| 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 |
| Win |
3–2 |
March 2025 |
Thailand M15, Nonthaburi |
World Tennis Tour |
Hard |
Petr Bar Biryukov |
6-1, 7-6(7–3) |
| Loss |
3-3 |
March 2025 |
Thailand M15, Nonthaburi |
World Tennis Tour |
Hard |
Etienne Donnet |
4–6, 2–6 |
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 |
Lukáš Pokorný
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 |