Stadion: COURT 1 Round: 62 Ground: Clay
| ITF - M25 - Jablonec Nad Nisou | 2021/05/17 07:30 | Ondrej Horak v Tomas Papik | 1-6,4-6 |
| ITF - M25 - Klosters | 2021/06/23 12:00 | Tomas Papik v Tobias Simon | 3-6,4-6 |
| ITF - M25 - Klosters | 2021/06/21 07:00 | Jonas Trinker v Tomas Papik | 5-7,6-3,4-10 |
| ITF - M25 - Klosters | 2021/06/20 08:45 | Tomas Papik v Hendrik Jebens | 6-3,7-6 |
| ITF - M25 - Most | 2021/05/23 14:00 | Tomas Papik v Mark Havlicek | 3-6,3-6 |
| ITF - M25 - Jablonec Nad Nisou | 2021/05/19 08:00 | Viktor Durasovic v Tomas Papik | 6-4,6-4 |
| ITF - M25 - Jablonec Nad Nisou | 2021/05/18 07:55 | Tomas Papik v Jiri Jenicek | 6-2,7-5 |
| ITF - M25 - Jablonec Nad Nisou | 2021/05/17 07:30 | Ondrej Horak v Tomas Papik | 1-6,4-6 |
| ITF - M25 - Prag | 2021/05/09 10:00 | Adam Pavlasek v Tomas Papik | 6-2,6-7,10-1 |
| ITF - M15 - Skopje | 2021/06/07 08:30 | Leonid Sheyngezikht v Ondrej Horak | 6-0,7-5 |
| ITF - M15 - Skopje | 2021/06/06 09:00 | Ondrej Horak v Luigi Sorrentino | 6-0,1-6,11-9 |
| ITF - M15 - Skopje | 2021/05/30 09:30 | Ondrej Horak v Viktor Jovic | 4-6,3-6 |
| ITF - M25 - Most | 2021/05/23 14:00 | Martin Damm v Ondrej Horak | 7-5,6-4 |
| ITF - M25 - Jablonec Nad Nisou | 2021/05/17 07:30 | Ondrej Horak v Tomas Papik | 1-6,4-6 |
| ITF - M25 - Jablonec Nad Nisou | 2021/05/16 08:30 | George Loffhagen v Ondrej Horak | 5-7,1-6 |
| ITF - M25 - Prag | 2021/05/10 08:00 | Jan Satral v Ondrej Horak | 6-1,6-2 |
| ITF - M25 - Prag | 2021/05/09 10:00 | Ondrej Horak v Jan Jermar | 7-6,6-3 |