Alex Knaff
Alex Knaff 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.
Future and Challenger finals
Singles 4 (3-3)
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score | |||||||||
| Loss | 0–1 |  Doubles 14 (7–7)
|
