Stadium: Court 5 Round: 62 Ground: Clay
| ITF M25 Pardubice | 2023/09/18 08:00 | Jonas P Hartenstein v Matej Rudolf | 6-1,6-0 |
| Koszalin, Singles Qualifying M-ITF-POL-02A | 2023/09/06 09:25 | Jonas P Hartenstein v 라지스키, 마치에이 | 4-6,4-6 |
| ITF M15 Szczawno | 2023/09/01 09:00 | Pieczkowski, Olaf v Jonas P Hartenstein | 6-2,6-2 |
| ITF M15 Szczawno | 2023/08/29 12:45 | 미쿨라, 미칼 v Jonas P Hartenstein | 1-6,0-6 |
| ITF M25 Marburg | 2023/07/05 09:00 | 리바코프, 알렉스 v Jonas P Hartenstein | 6-4,6-0 |
| ITF M25 Marburg | 2023/07/04 08:00 | Jonas P Hartenstein v Martin Benes | 3-6,6-3,10-7 |
| ITF M25 Risskov/Aarhus | 2023/06/15 11:55 | 호우케스, 맥스 v Jonas P Hartenstein | 6-7,6-4,6-3 |
| ITF M25 Risskov/Aarhus | 2023/06/14 10:40 | 왈린, 올레 v Jonas P Hartenstein | 2-6,4-6 |
| ITF M25 Pardubice | 2023/09/18 08:00 | 그라프, 도미니크 v Postolka, Roman | 6-7,4-6 |
| ITF M25 Pardubice | 2023/09/17 10:30 | Martin Benes v Postolka, Roman | 3-6,4-6 |
| ITF M25 Jablonec Nad Nisou | 2023/08/29 12:30 | 스토델, 티모 v Postolka, Roman | 6-1,7-6 |
| ITF M15 Trier | 2023/08/21 09:30 | Postolka, Roman v Jannik Maute | 3-6,6-7 |
| ITF M15 Kottingbrunn | 2023/08/14 12:00 | Tomas Lanik v Postolka, Roman | 6-4,4-6,10-6 |
| ITF M15 Kottingbrunn | 2023/08/14 08:00 | 스콤파린, 피에트로 로메오 v Postolka, Roman | 2-6,1-6 |
| ITF M15 Kottingbrunn | 2023/08/13 08:00 | Pierre Antoine Tailleu v Postolka, Roman | 4-6,2-6 |
| ITF M25 Poprad | 2023/06/22 08:00 | Postolka, Roman v 올로브, 블라디슬라브 | 3-6,4-6 |