Stadium: Hard 17 Round: 27 Ground: Hardcourt outdoor
| ITF M15 Uberlingen | 2023/08/16 08:00 | Matthew William Donald v Aleksandre Metreveli | 6-4,1-6,4-6 |
| ITF M15 Frankfurt Am Main | 2023/08/08 09:00 | Kai Lemstra v Matthew William Donald | 6-3,6-1 |
| ITF M15 Monastir | 2023/07/28 08:30 | Kris Van Wyk v Matthew William Donald | 6-1,6-4 |
| ITF M15 Monastir | 2023/07/27 10:25 | Matthew William Donald v Dylan Salton | 6-1,6-1 |
| ITF M15 Monastir | 2023/07/26 10:00 | Matthew William Donald v Gabriele Bosio | 4-6,6-2,6-3 |
| ITF M15 Monastir | 2023/07/18 10:20 | Kody Pearson v Matthew William Donald | 6-1,6-2 |
| ITF M15 Wroclaw | 2023/06/29 08:00 | Matthew William Donald v Sergey Fomin | 2-6,6-4,2-6 |
| ITF M15 Wroclaw | 2023/06/28 09:40 | Fryderyk Lechno-Wasiutynski v Matthew William Donald | 6-4,3-6,4-6 |
| Challenger Prague | 2023/08/20 13:20 | Federico Agustin Gomez v Oleg Prihodko | 6-4,4-6,6-4 |
| Challenger Banja Luka | 2023/08/07 09:30 | Marko Topo v Oleg Prihodko | 6-7,6-2,6-4 |
| Challenger Liberec | 2023/07/30 10:50 | Toby Alex Kodat v Oleg Prihodko | 6-4,6-4 |
| ITF M25 Bacau | 2023/07/28 07:00 | Hernan Casanova v Oleg Prihodko | 3-6,6-3,7-6 |
| ITF M25 Bacau | 2023/07/27 09:45 | Valentin Vanta v Oleg Prihodko | 3-6,6-2,2-6 |
| ITF M25 Bacau | 2023/07/26 14:40 | Ioan A Teglas v Oleg Prihodko | 6-4,2-6,0-6 |
| Challenger Amersfoort | 2023/07/16 13:05 | Alex M Pujolras v Oleg Prihodko | 6-4,7-6 |
| UTR Pro Olomouc | 2023/07/09 08:38 | Oleg Prihodko v Dominik Suc | 6-1,0-0 |