Stadium: Centre Round: 44 Ground: Clay
| ITF M25 Prague | 2021/05/11 14:50 | Krumich, Martin v 트셍, 춘 흐신 | 1-6,4-6 |
| Challenger Ostrava | 2021/04/26 10:40 | 비즈, 세바스티안 v Krumich, Martin | 6-2,6-2 |
| ITF M15 Bratislava | 2021/03/11 11:10 | 마로즈산, 파비안 v Krumich, Martin | 7-5,6-3 |
| ITF M15 Bratislava | 2021/03/10 14:40 | 페카크, 스테판 v Krumich, Martin | 7-6,5-7,1-6 |
| ITF M15 Bratislava | 2021/03/03 09:00 | 할리아크, 미칼라이 v Krumich, Martin | 6-3,2-6,6-2 |
| ITF M15 St Petersburg | 2021/02/12 10:00 | Krumich, Martin v Kuznetsov, Andrey | 2-6,6-7 |
| ITF M15 St Petersburg | 2021/02/11 08:30 | 두브리브니, 아르템 v Krumich, Martin | 4-6,6-1,5-7 |
| ITF M15 St Petersburg | 2021/02/09 10:00 | 소렌티노, 루이기 v Krumich, Martin | 2-6,6-7 |