Stadium: Court 2 Round: 27 Ground: Clay
| ITF M15 Sofia | 2023/07/06 06:30 | Szymon Kielan v Andreja Petrovic | 6-3,6-3 |
| ITF M15 Sofia | 2023/07/04 07:00 | Federico Agustin Gomez v Szymon Kielan | 2-6,3-6 |
| ITF M15 Wroclaw | 2023/06/27 08:00 | Tyler Zink v Szymon Kielan | 6-3,6-1 |
| ITF M15 Monastir | 2023/04/19 11:10 | Shunsuke Nakagawa v Szymon Kielan | 6-4,6-1 |
| ITF M15 Monastir | 2023/04/13 08:30 | Szymon Kielan v Daniel Rodrigues | 2-6,2-6 |
| ITF M15 Monastir | 2023/04/12 08:30 | Szymon Kielan v David Perez Sanz | 7-6,6-3 |
| ITF M25 Trnava | 2023/03/28 13:25 | Szymon Kielan v Hynek Barton | 6-4,2-6,4-6 |
| ITF M15 Monastir | 2023/03/17 11:00 | Olaf Pieczkowski v Szymon Kielan | 6-1,6-1 |
| ITF M15 Sofia | 2023/07/06 08:10 | Adam Heinonen v Denis Klok | 1-6,1-6 |
| ITF M15 Sofia | 2023/07/04 09:40 | Gabriel Donev v Denis Klok | 5-7,1-6 |
| ITF M15 Belgrade | 2023/06/29 06:50 | Denis Klok v Ergi Kirkin | 6-7,3-6 |
| ITF M15 Tehran | 2023/06/18 12:30 | Denis Klok v Erik Arutiunian | 6-2,6-1 |
| ITF M15 Tehran | 2023/06/16 08:00 | Denis Klok v Grigoriy Lomakin | 6-1,6-2 |
| ITF M15 Tehran | 2023/06/15 06:30 | Denis Klok v Rostislav Galfinger | 6-1,6-2 |
| ITF M15 Tehran | 2023/06/14 06:30 | Denis Klok v Saveliy Ivanov | 6-3,6-2 |
| ITF M15 Tehran | 2023/06/08 06:00 | Alexander Stater v Denis Klok | 3-6,6-3,7-5 |