Stadium: Court 11 Round: 27 Ground: Hardcourt outdoor
| ITF M15 Bad Waltersdorf | 2021/08/23 13:00 | Gabriel Decamps v Lorenzo Rottoli | 6-4,7-6 |
| ITF M15 Bad Waltersdorf | 2021/08/23 07:00 | Pietro Pampanin v Lorenzo Rottoli | 1-6,2-6 |
| ITF M15 Bad Waltersdorf | 2021/08/22 07:00 | Edward Hubner v Lorenzo Rottoli | 6-4,1-6,4-10 |
| ITF M15 Warmbad-Villach | 2021/08/18 13:15 | Lorenzo Rottoli v Franco Emanuel Egea | 1-6,1-6 |
| ITF M15 Parnu | 2021/08/04 12:05 | Lorenzo Rottoli v Luke Johnson | 6-2,6-7,4-6 |
| ITF M15 Monastir | 2021/07/05 14:00 | Lorenzo Rottoli v Valentin Vacherot | 6-4,4-6,7-10 |
| ITF M15 Monastir | 2021/07/05 09:00 | Lorenzo Rottoli v Nikolay Sysoev | 6-1,6-4 |
| ITF M15 Monastir | 2021/07/04 09:00 | Lorenzo Rottoli v Essa Qabazard | 6-2,3-6,10-0 |
| Challenger Prague | 2021/08/23 11:20 | Michael Geerts v Martin Krumich | 6-2,6-4 |
| ITF M25 Prostejov | 2021/08/18 08:00 | Martin Krumich v Nikolas Sanchez Izquierdo | 0-6,2-6 |
| ITF M25 Prostejov | 2021/08/17 09:15 | Martin Krumich v Daniel Siniakov | 3-6,6-4,7-5 |
| Challenger Prague | 2021/08/09 12:30 | Evan Furness v Martin Krumich | 4-6,6-4,6-3 |
| Challenger Liberec | 2021/08/01 12:30 | Evan Furness v Martin Krumich | 6-3,6-2 |
| ITF M25 Kottingbrunn | 2021/07/22 10:10 | Pavel Nejedly v Martin Krumich | 6-3,4-6,6-2 |
| ITF M25 Kottingbrunn | 2021/07/21 09:30 | Martin Krumich v Lukas Neumayer | 7-5,6-2 |
| ITF M25 Kottingbrunn | 2021/07/20 08:00 | Martin Krumich v Lukas Palovic | 7-5,6-2 |