Stadium: Court 1 Round: 54 Ground: Clay
| ITF M15 - Zilina | 2021/08/30 11:30 | Dominik Kellovsky v Sven Corbinais | 3-6,6-2,10-6 |
| ITF M15 - Lodz | 2021/08/16 14:00 | Dominik Kellovsky v Valerio Aboian | 0-6,1-6 |
| ITF M25 - Frankfurt am Main | 2021/08/09 10:50 | Daniel Cukierman v Dominik Kellovsky | 6-2,6-3 |
| ITF M25 - Grodzisk Mazowiecki | 2021/08/03 13:35 | Wilson Leite v Dominik Kellovsky | 6-4,6-2 |
| ITF M25 - Wroclaw | 2021/06/28 11:00 | Toby Alex Kodat v Dominik Kellovsky | 6-3,6-4 |
| ITF M25 - Wroclaw | 2021/06/27 14:00 | Matteo Donati v Dominik Kellovsky | 6-2,6-7,6-10 |
| Tjekkiet - Extraliga | 2020/12/12 09:00 | Dalibor Svrcina v Dominik Kellovsky | 7-6,6-3 |
| ITF M15 - Heraklion | 2020/11/02 09:30 | Calvin Hemery v Dominik Kellovsky | 6-0,6-3 |
| ITF M15 - Bratislava | 2021/08/23 09:00 | Tomas Lanik v Sean Hess | 5-7,4-6 |
| 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 |