Stadium: Court 2 Round: 62 Ground: Hardcourt outdoor
| ITF M15 East Lansing | 2021/11/20 16:55 | Alex Knaff v Gabriel Diallo | 2-6,7-6,2-6 |
| ITF M15 East Lansing | 2021/11/19 17:55 | Alex Knaff v Colin Sinclair | 7-6,5-7,6-2 |
| ITF M15 East Lansing | 2021/11/18 20:00 | Ronald Hohmann v Alex Knaff | 3-6,4-6 |
| ITF M15 East Lansing | 2021/11/17 18:00 | William Bushamuka v Alex Knaff | 2-6,6-7 |
| ITF M15 East Lansing | 2021/11/16 16:00 | Joshua Sheehy v Alex Knaff | 3-6,2-6 |
| 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 Antalya | 2021/12/14 06:30 | Geni Inoue v Riccardo Tavilla | 6-4,3-6,7-10 |
| ITF M15 Antalya | 2021/12/13 09:50 | Geni Inoue v Aziz Dadabaev | 6-0,6-0 |
| ITF M15 Antalya | 2021/12/12 06:30 | Matias Ponce De Leon v Geni Inoue | 3-6,4-6 |
| ITF M15 Antalya | 2021/12/07 08:30 | Geni Inoue v Tadas Babelis | 1-6,6-1,9-11 |
| ITF M15 Antalya | 2021/12/05 06:00 | Geni Inoue v Semen Voronin | 6-1,6-0 |
| ITF M15 Monastir | 2021/10/04 08:00 | Geni Inoue v Alexis Boureau | 0-6,1-6 |
| ITF M15 Monastir | 2021/10/03 08:00 | Maximilian Figl v Geni Inoue | 3-6,3-6 |
| ITF M15 Monastir | 2021/09/28 08:00 | Kousuke Ogura v Geni Inoue | 6-7,7-5,10-2 |