Stadium: Court 2 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2021/09/05 11:00 | Tom Dynka v Alex Knaff | 0-6,0-6 |
| ITF M15 Monastir | 2021/09/01 11:05 | Alex Knaff v Felix Corwin | 7-5,6-7,3-6 |
| ITF M15 Monastir | 2021/08/31 08:00 | Yuta Kawahashi v Alex Knaff | 7-5,4-6,7-10 |
| ITF M15 Monastir | 2021/08/30 13:00 | Alex Knaff v Egor Tsarapkin | 6-3,6-3 |
| ITF M25 Trier | 2021/08/23 14:45 | Yannik Steinegger v Alex Knaff | 6-3,6-1 |
| ITF M25 Trier | 2021/08/23 09:00 | Alex Knaff v Jeremy Schifris | 6-3,7-6 |
| ITF M25 Koksijde | 2021/08/15 10:15 | Jakub Wojcik v Alex Knaff | 6-3,4-6,10-8 |
| ITF M15 Novi Sad | 2021/08/03 08:00 | Alex Knaff v Roko Horvat | 4-6,6-1,6-10 |
| ITF M15 Monastir | 2021/09/05 11:00 | Raphael Calzi v Masamichi Imamura | 5-7,0-6 |
| ITF M15 Monastir | 2021/08/29 08:00 | August Holmgren v Masamichi Imamura | 6-4,6-2 |
| ITF M15 Monastir | 2021/08/22 10:00 | Masamichi Imamura v Luis Diego Chavez Villalpando | 6-7,6-1,5-10 |
| ITF M15 Monastir | 2021/08/19 07:30 | Luciano Darderi v Masamichi Imamura | 6-3,6-0 |
| ITF M15 Monastir | 2021/08/18 07:30 | Masamichi Imamura v Mattias Southcombe | 6-3,6-1 |
| ITF M15 Monastir | 2021/08/17 07:30 | Masamichi Imamura v Luis Diego Chavez Villalpando | 7-6,7-6 |
| ITF M15 Monastir | 2021/08/16 08:30 | Chanchai Sookton-Eng v Masamichi Imamura | 3-6,4-6 |
| ITF M15 Monastir | 2021/08/15 09:30 | Blu Baker v Masamichi Imamura | 3-6,5-7 |