Stadium: Court 1 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Ithaca | 2021/11/04 13:55 | Felix Corwin v Alex Knaff | 5-7,7-6,7-5 |
| ITF M15 Ithaca | 2021/11/03 15:30 | Radu Mihai Papoe v Alex Knaff | 6-4,3-6,0-6 |
| ITF M15 Tallahassee | 2021/10/27 13:55 | Alex Knaff v Sho Shimabukuro | 4-6,6-4,4-6 |
| ITF M15 Tallahassee | 2021/10/26 13:00 | Blu Baker v Alex Knaff | 6-7,5-7 |
| ITF M15 Tallahassee | 2021/10/25 13:00 | Alex Knaff v Matthew Dellavedova | 6-4,6-2 |
| ITF M25 Setubal | 2021/10/05 10:00 | Arthur Cazaux v Alex Knaff | 6-1,6-7,10-5 |
| ITF M25 Setubal | 2021/10/04 10:00 | Aditya Katticaren v Alex Knaff | 0-6,0-6 |
| ITF M15 Forbach | 2021/09/27 13:30 | Millen Hurrion v Alex Knaff | 6-3,6-7,10-3 |
| ITF M15 Monastir | 2021/09/06 09:30 | Tomohiro Masabayashi v Gabriel Decamps | 4-6,0-6 |
| ITF M15 Monastir | 2021/09/05 09:30 | Ignacio B Alia v Tomohiro Masabayashi | 3-6,4-6 |
| ITF M15 Monastir | 2021/09/01 11:15 | Peter Bertran v Tomohiro Masabayashi | 6-3,6-3 |
| ITF M15 Monastir | 2021/08/31 08:00 | Tomohiro Masabayashi v Sergey Bolotov | 6-4,6-3 |
| ITF M15 Monastir | 2021/08/30 14:00 | Tomohiro Masabayashi v Fabrizio Andaloro | 7-6,7-5 |
| ITF M15 Monastir | 2021/08/29 12:00 | Adil Kalyanpur v Tomohiro Masabayashi | 2-6,1-6 |
| ITF M15 Monastir | 2021/08/15 11:00 | Yuta Kawahashi v Tomohiro Masabayashi | 6-3,6-3 |
| ITF M15 Monastir | 2021/08/11 07:30 | Dan Added v Tomohiro Masabayashi | 6-2,6-2 |