Stadion: Center Court Round: 26 Ground: Clay
| ITF - M15 - Sofia | 2023/07/05 06:00 | Sean Hess v Adam Heinonen | 7-5,5-7,5-7 |
| ITF - M15 - Sofia | 2023/07/03 14:30 | Aristotelis Thanos v Adam Heinonen | 3-6,5-7 |
| ITF - M15 - Sofia | 2023/07/03 09:30 | Ioannis Kountourakis v Adam Heinonen | 6-7,5-7 |
| ITF - M15 - Wroclaw | 2023/06/26 12:00 | Jasza Szajrych v Adam Heinonen | 2-6,6-3,10-7 |
| ITF - M15 - Wroclaw | 2023/06/26 08:00 | Przemyslaw Michocki v Adam Heinonen | 2-6,0-6 |
| ITF - M15 - Wroclaw | 2023/06/25 10:30 | Joan Nadal Vives v Adam Heinonen | 5-7,0-6 |
| ITF - M15 - Saarlouis | 2023/06/22 14:55 | Adam Heinonen v Matthew Dellavedova | 3-6,6-3,3-6 |
| ITF - M15 - Saarlouis | 2023/06/21 09:30 | Zura Tkemaladze v Adam Heinonen | 0-6,4-6 |
| ITF - M15 - Sofia | 2023/07/04 09:40 | Gabriel Donev v Denis Klok | 5-7,1-6 |
| ITF - M15 - Belgrad | 2023/06/29 06:50 | Denis Klok v Ergi Kirkin | 6-7,3-6 |
| ITF - M15 - Teheran | 2023/06/18 12:30 | Denis Klok v Erik Arutiunian | 6-2,6-1 |
| ITF - M15 - Teheran | 2023/06/16 08:00 | Denis Klok v Grigoriy Lomakin | 6-1,6-2 |
| ITF - M15 - Teheran | 2023/06/15 06:30 | Denis Klok v Rostislav Galfinger | 6-1,6-2 |
| ITF - M15 - Teheran | 2023/06/14 06:30 | Denis Klok v Saveliy Ivanov | 6-3,6-2 |
| ITF - M15 - Teheran | 2023/06/08 06:00 | Alexander Stater v Denis Klok | 3-6,6-3,7-5 |
| ITF - M15 - Teheran | 2023/06/07 09:55 | Manish Ganesh v Denis Klok | 2-6,2-6 |