Stadium: Court 4 Round: 54 Ground: Clay
| ITF - M15 Bratislava | 2021/08/18 08:00 | Tomas Lanik v Mate Valkusz | 3-6,3-6 |
| ITF - M15 Bratislava | 2021/08/17 08:00 | Leyton Rivera v Tomas Lanik | 6-7,2-6 |
| ITF - M15 Bratislava | 2021/08/16 10:30 | Tomas Lanik v Milos Karol | 4-6,7-5,12-10 |
| ITF - M25 Grodzisk Mazowiecki | 2021/08/02 14:25 | Svyatoslav Ilnytskyy v Tomas Lanik | 6-3,6-0 |
| ITF - M25 Grodzisk Mazowiecki | 2021/08/02 08:00 | Tomas Lanik v Juliusz Bienkiewicz | 4-6,6-1,10-5 |
| ITF - M25 Grodzisk Mazowiecki | 2021/08/01 09:35 | Tomas Lanik v Dariusz Kuczynski | 6-2,6-1 |
| ITF - M25 Kottingbrunn | 2021/07/18 07:30 | Tomas Lanik v Francisco Vittar | 4-6,2-6 |
| ITF - M15 Poprad | 2021/07/05 08:00 | Tomas Lanik v Michal Novansky | 7-6,2-6,5-10 |
| ITF - M15 Lodz | 2021/08/15 09:30 | Jesse De Jager v Sean Hess | 6-4,3-6,10-7 |
| ITF - M15 Gdynia | 2021/08/09 08:00 | Filip Pieczonka v Sean Hess | 4-6,6-1,10-8 |
| ITF - M15 Gdynia | 2021/08/08 08:00 | Sean Hess v Palaphoom Kovapitukted | 7-5,6-2 |
| ITF - M15 Káhira | 2021/08/01 09:00 | Sean Hess v Menelaos Efstathiou | 4-6,6-7 |
| ITF - M15 Káhira | 2021/07/22 08:00 | Sean Hess v Cezar Cretu | 4-6,4-6 |
| ITF - M15 Káhira | 2021/07/21 11:15 | Sean Hess v Nikita Kashirin | 6-4,6-4 |
| ITF - M15 Córdoba | 2021/04/05 14:00 | Sean Hess v Lautaro Agustin Falabella | 6-7,4-6 |
| ITF - M15 Villa Maria | 2021/03/28 14:00 | Franco Emanuel Egea v Sean Hess | 7-5,6-0 |