Stadium: Court 4 Round: 27 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2021/11/17 09:30 | Dominik Boehler v Pierre Delage | 6-2,7-6 |
| ITF M15 Monastir | 2021/11/14 08:30 | Pierre Yves Bailly v Dominik Boehler | 4-6,7-6,6-2 |
| ITF M15 Monastir | 2021/11/13 10:00 | Gage Brymer v Dominik Boehler | 2-6,1-6 |
| ITF M15 Monastir | 2021/11/12 10:30 | Dominik Boehler v Terence Atmane | 7-6,3-6,6-4 |
| ITF M15 Monastir | 2021/11/11 12:05 | Dominik Boehler v Allan Deschamps | 6-4,6-3 |
| ITF M15 Monastir | 2021/11/09 12:00 | Dominik Boehler v Martin Katz | 6-2,7-5 |
| ITF M15 Doha | 2021/10/15 13:00 | Dominik Boehler v Yanki Erel | 2-6,6-7 |
| ITF M15 Doha | 2021/10/14 15:05 | Dominik Boehler v Maikel De Boes | 6-0,6-1 |
| ITF M25 Decatur | 2021/08/04 18:05 | Alfredo Perez v Shuichi Sekiguchi | 6-1,7-6 |
| Challenger Lexington | 2021/07/26 19:25 | Ulises Blanch v Shuichi Sekiguchi | 6-3,6-4 |
| Challenger Cary | 2021/07/19 21:00 | Christian Harrison v Shuichi Sekiguchi | 6-4,6-4 |
| Challenger Salinas 2 | 2021/04/27 18:40 | Shuichi Sekiguchi v Pedro Sakamoto | 2-6,4-6 |
| Challenger Salinas | 2021/04/21 15:00 | Shuichi Sekiguchi v Nicolas Jarry | 1-6,2-6 |
| Challenger Salinas | 2021/04/19 16:00 | Hiroki Moriya v Shuichi Sekiguchi | 1-6,6-7 |
| Challenger Orlando | 2021/04/12 15:30 | Altug Celikbilek v Shuichi Sekiguchi | 4-6,6-4,7-5 |
| Challenger Cleveland | 2021/03/16 18:40 | Alexis Galarneau v Shuichi Sekiguchi | 6-3,6-1 |