Stadium: Court 2 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Esch/Alzette | 2021/07/20 15:45 | Marlon Vankan v Alex Knaff | 6-4,6-4 |
| Davis Cup | 2021/06/18 10:30 | Valentin Vacherot v Alex Knaff | 6-2,6-3 |
| Davis Cup | 2021/06/16 09:50 | Alex Knaff v Simon Carr | 3-6,2-6 |
| ITF M15 Tallahassee | 2019/12/04 20:55 | Alex Knaff v Jason Kros | 6-1,3-6,6-7 |
| ITF M15 Tabarka | 2019/05/20 13:00 | Alex Knaff v Mauro De Maio | 6-7,6-2,8-10 |
| ITF USA F35 | 2018/12/03 15:00 | Paul Oosterbaan v Alex Knaff | 7-6,6-4 |
| ITF USA F32 | 2018/11/15 16:00 | Alex Knaff v Ricardo Rodriguez-Pace | 2-6,2-6 |
| ITF Belgium F8 | 2018/08/15 09:30 | Germain Gigounon v Alex Knaff | 6-0,6-2 |
| ITF M15 Monastir | 2021/06/14 08:00 | Emil Reinberg v Masamichi Imamura | 6-4,0-6,11-9 |
| ITF M15 Monastir | 2021/06/13 10:00 | Masamichi Imamura v Julian Cash | 6-4,6-4 |
| ITF M15 Monastir | 2021/06/07 08:00 | Kody Pearson v Masamichi Imamura | 6-2,5-7,10-6 |
| ITF M15 Monastir | 2021/06/06 10:00 | James Edley v Masamichi Imamura | 0-6,0-6 |
| ITF M15 Monastir | 2021/05/31 12:30 | Uisung Park v Masamichi Imamura | 7-6,6-2 |
| ITF M15 Monastir | 2021/05/31 08:00 | Antoine Vincent v Masamichi Imamura | 4-6,6-7 |
| ITF M15 Monastir | 2021/05/03 12:00 | Zachary Svajda v Masamichi Imamura | 0-6,6-3,10-7 |
| ITF M15 Monastir | 2021/05/02 09:00 | Dong Ju Kim v Masamichi Imamura | 2-6,3-6 |