Stadium: Court 5 Round: 26 Ground: Hardcourt outdoor
| ITF M15 Sozopol | 2021/09/14 09:00 | Krumich, Martin v 반타, 발렌틴 | 7-5,7-6 |
| ITF M25 Ricany | 2021/09/02 10:45 | 루즈, 올란도 v Krumich, Martin | 6-7,6-1,6-2 |
| ITF M25 Ricany | 2021/09/01 09:20 | 바르나트, 지리 v Krumich, Martin | 2-6,3-6 |
| Challenger Prague | 2021/08/23 11:20 | 기어츠, 미가엘 v Krumich, Martin | 6-2,6-4 |
| Prostejov, Singles M-ITF-CZE-04A | 2021/08/18 08:00 | Krumich, Martin v Nikolas Sanchez Izquierdo | 0-6,2-6 |
| Prostejov, Singles M-ITF-CZE-04A | 2021/08/17 09:15 | Krumich, Martin v 시니아코브, 다니엘 | 3-6,6-4,7-5 |
| Challenger Prague | 2021/08/09 12:30 | 푸르네스, 에반 v Krumich, Martin | 4-6,6-4,6-3 |
| Challenger Liberec | 2021/08/01 12:30 | 푸르네스, 에반 v Krumich, Martin | 6-3,6-2 |
| ITF M15 Sozopol | 2021/09/14 10:00 | Konstantin Zhzhenov v 센기즈, 바란 | 6-7,6-4,6-1 |
| ITF M15 Kazan | 2021/03/09 11:30 | Konstantin Zhzhenov v 필리포브, 에브게니 | 5-7,3-6 |