Stadium: Court 3 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Ostrava | 2021/11/24 14:25 | Matthew William Donald v Jiri Barnat | 3-6,6-7 |
| ITF M15 Opava | 2021/11/17 10:40 | Matthew William Donald v Henri Squire | 2-6,6-7 |
| ITF M15 Parnu | 2021/10/27 12:05 | Oscar Moraing v Matthew William Donald | 7-5,6-1 |
| ITF M25 Prague | 2021/10/06 12:20 | Tobias Simon v Matthew William Donald | 6-3,4-6,6-3 |
| ITF M25 Pardubice | 2021/09/23 11:15 | Matthew William Donald v Luca Nardi | 4-6,3-6 |
| ITF M25 Pardubice | 2021/09/22 09:00 | Tomas Lanik v Matthew William Donald | 2-6,2-6 |
| ITF M25 Prostejov | 2021/08/16 11:15 | Zsombor Piros v Matthew William Donald | 6-3,6-4 |
| Challenger Liberec | 2021/08/01 14:00 | Matthew William Donald v Rudolf Molleker | 6-4,5-7,5-7 |
| ITF M15 Cairo | 2021/12/06 08:00 | Belal Abou Taleb v Yu Hsiang Su | 3-6,7-5,10-7 |
| ITF M15 Cairo | 2021/11/28 09:00 | Yu Hsiang Su v Edoardo Zanada | 5-7,2-6 |
| ITF M15 Cairo | 2021/11/24 10:40 | Facundo Yunis v Yu Hsiang Su | 6-2,6-2 |
| ITF M15 Sharm El Sheikh | 2021/11/15 10:30 | Yu Hsiang Su v Cyril Vandermeersch | 1-6,3-6 |
| ITF M15 Sharm El Sheikh | 2021/11/02 07:30 | Ray Ho v Yu Hsiang Su | 6-4,7-6 |
| ITF M15 Sharm El Sheikh | 2021/11/01 08:00 | Yu Hsiang Su v Laelson Rodrigues | 6-1,6-4 |
| ITF Chinese Taipei F2 Qual | 2018/07/23 04:45 | Fei Yun Liao v Yu Hsiang Su | 7-5,6-2 |
| ITF Chinese Taipei F2 Qual | 2018/07/22 05:30 | Brian Boggs v Yu Hsiang Su | 1-6,1-6 |