Stadium: Center Court Round: 29 Ground: Clay
| ITF M25 Prague | 2021/05/15 11:10 | Chun Hsin Tseng v Manuel Guinard | 2-6,1-6 |
| Challenger Maia | 2021/12/19 11:00 | Chun Hsin Tseng v Nuno Borges | 5-7,7-5,6-2 |
| Challenger Maia | 2021/12/18 12:25 | Andrej Martin v Chun Hsin Tseng | 1-6,2-6 |
| Challenger Maia | 2021/12/17 14:35 | Eduard Esteve Lobato v Chun Hsin Tseng | 1-6,5-7 |
| Challenger Maia | 2021/12/16 12:05 | Fabian Marozsan v Chun Hsin Tseng | 6-7,3-6 |
| Challenger Maia | 2021/12/15 14:55 | Matteo Viola v Chun Hsin Tseng | 3-6,4-6 |
| Challenger Maia | 2021/12/12 11:00 | Chun Hsin Tseng v Geoffrey Blancaneaux | 6-3,3-6,2-6 |
| Challenger Maia | 2021/12/11 11:00 | Andrej Martin v Chun Hsin Tseng | 4-6,5-7 |
| Challenger Maia | 2021/12/10 12:55 | Calvin Hemery v Chun Hsin Tseng | 4-6,1-6 |
| Challenger Roanne | 2021/11/13 13:10 | Hiroki Moriya v Manuel Guinard | 6-2,6-3 |
| Challenger Roanne | 2021/11/12 11:55 | Manuel Guinard v Andrea Arnaboldi | 6-2,6-3 |
| Challenger Roanne | 2021/11/11 14:15 | Manuel Guinard v Andrey Kuznetsov | 7-6,6-7,6-3 |
| Challenger Tenerife | 2021/11/04 12:15 | Joao Sousa v Manuel Guinard | 7-5,6-0 |
| Challenger Tenerife | 2021/11/02 10:00 | Thomas Fabbiano v Manuel Guinard | 2-6,6-3,4-6 |
| Challenger Brest | 2021/10/28 19:35 | Manuel Guinard v Luca Van Assche | 6-7,3-6 |
| Challenger Brest | 2021/10/26 18:05 | Arthur Rinderknech v Manuel Guinard | 4-6,2-6 |
| Challenger Losinj | 2021/10/18 11:35 | Manuel Guinard v Nino Serdarusic | 6-2,3-6,4-6 |