Stadium: Hard 21 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2023/11/19 11:15 | Thomas Mathys v Anthony Genov | 0-6,1-6 |
| ITF M25 Sion | 2023/08/28 17:25 | Thomas Mathys v Stepan Pecak | 2-6,2-6 |
| ITF M25 Sion | 2023/08/27 14:15 | Batiste Guerra v Thomas Mathys | 1-6,2-6 |
| ITF M15 Caslano | 2023/08/20 14:50 | Lorenzo Vatteroni v Thomas Mathys | 6-0,6-1 |
| ITF M25 Muttenz | 2023/08/14 14:00 | Jonas Schaer v Thomas Mathys | 6-3,5-7,10-4 |
| ITF M15 Xativa | 2023/07/30 07:00 | Thomas Mathys v Sam K Baumgartner | 3-6,1-6 |
| ITF M25 Porto | 2023/07/25 11:40 | Jake Van Emburgh v Thomas Mathys | 6-0,6-4 |
| ITF M25 Porto | 2023/07/24 13:30 | Thomas Mathys v Rodrigo Beires | 6-1,6-1 |
| ITF M15 Heraklion | 2023/11/22 12:00 | Mili Poljicak v Nazar Oliynykov | 6-1,6-0 |
| ITF M15 Heraklion | 2023/11/21 07:00 | Nazar Oliynykov v Thomas Kostka | 7-6,7-5 |
| ITF M15 Heraklion | 2023/11/20 11:00 | Nazar Oliynykov v Dimitris Sakellaridis | 6-0,6-0 |
| ITF M15 Heraklion | 2023/11/19 11:00 | Denis Constantin Spiridon v Nazar Oliynykov | 6-1,3-6,5-10 |
| ITF M25 Heraklion | 2023/11/14 07:30 | Benjamin Pietri v Nazar Oliynykov | 6-1,6-3 |
| ITF M25 Heraklion | 2023/11/13 08:30 | Mateusz Kulakowski v Nazar Oliynykov | 1-6,7-5,3-10 |
| ITF M25 Heraklion | 2023/10/29 07:00 | Nazar Oliynykov v Kevin Edengren | 2-6,0-6 |
| ITF M15 Heraklion | 2023/10/22 11:00 | Eleftherios Neos v Nazar Oliynykov | 3-6,6-3,13-11 |