Stadium: Court 3 Round: 25 Ground: Clay
| ITF M25 Klosters | 2021/06/21 07:00 | Jonas Trinker v Papik, Tomas | 5-7,6-3,4-10 |
| ITF M25 Klosters | 2021/06/20 08:45 | Papik, Tomas v Hendrik Jebens | 6-3,7-6 |
| ITF M25 Most | 2021/05/23 14:00 | Papik, Tomas v Mark Havlicek | 3-6,3-6 |
| ITF M25 Jablonec Nad Nisou | 2021/05/19 08:00 | Viktor Durasovic v Papik, Tomas | 6-4,6-4 |
| ITF M25 Jablonec Nad Nisou | 2021/05/18 07:55 | Papik, Tomas v Jiri Jenicek | 6-2,7-5 |
| ITF M25 Jablonec Nad Nisou | 2021/05/17 07:30 | Ondrej Horak v Papik, Tomas | 1-6,4-6 |
| ITF M25 Prague | 2021/05/09 10:00 | Pavlasek, Adam v Papik, Tomas | 6-2,6-7,10-1 |
| ITF M25 Meerbusch | 2021/04/11 13:00 | Papik, Tomas v Karlo Cubelic | 3-6,2-6 |
| Forli 6, Italy | 2021/06/14 09:30 | Thiago Agustin Tirante v Simon, Tobias | 7-6,6-3 |
| Forli 6, Italy | 2021/06/13 14:15 | Matteo Arnaldi v Simon, Tobias | 6-7,2-6 |
| ITF M15 Gaiba | 2021/06/11 10:00 | Benjamin Lock v Simon, Tobias | 6-2,6-3 |
| ITF M15 Gaiba | 2021/06/10 14:45 | Bertuccioli, Federico v Simon, Tobias | 4-6,3-6 |
| ITF M15 Gaiba | 2021/06/09 15:55 | Andrea Picchione v Simon, Tobias | 5-7,7-6,5-7 |
| Sarajevo, Singles Main, M-ITF-BIH-05A | 2021/06/02 10:40 | Simon, Tobias v Federico Iannaccone | 1-6,3-6 |
| ITF M25 Meerbusch | 2021/04/15 13:25 | Simon, Tobias v Tim Handel | 4-6,6-7 |
| ITF M25 Meerbusch | 2021/04/14 12:25 | Prechtel, Sebastian v Simon, Tobias | 5-7,6-3,3-6 |