Stadium: Court 07 Round: 44 Ground: Clay
| ITF M15 Warmbad-Villach | 2023/05/21 07:00 | Jakub Ostajewski v Zan M Mihovec | 6-0,6-0 |
| UTR Pro Thessaloniki | 2023/04/29 05:00 | Jakub Ostajewski v Besir Durguti | 1-6,4-6 |
| UTR Pro Thessaloniki | 2023/04/28 08:00 | Jakub Ostajewski v Enrique Bogo | 6-2,1-6,3-6 |
| UTR Pro Thessaloniki | 2023/04/26 05:00 | Jakub Ostajewski v Christos Antonopoulos | 2-6,0-6 |
| UTR Pro Thessaloniki | 2023/04/25 09:08 | Jakub Ostajewski v Vladimir Filip | 2-6,1-6 |
| UTR Pro Thessaloniki | 2023/04/24 05:00 | Mihai Razvan Marinescu v Jakub Ostajewski | 6-3,5-0 |
| UTR Pro Florida | 2023/04/02 13:00 | Azariah Rusher v Jakub Ostajewski | 3-6,6-7 |
| UTR Pro Copenhagen | 2023/02/18 07:00 | Jakub Ostajewski v Cornelius Alexander Shalmi | 2-6,4-6 |
| ITF M25 Nottingham Qual | 2023/04/24 12:05 | Luke Simkiss v Jimmy Yang | 6-4,7-6 |
| ITF M25 Nottingham | 2023/04/16 11:00 | Marcus Walters v Jimmy Yang | 7-6,6-3 |
| ITF M25 Saint Dizier | 2023/03/30 10:40 | Jimmy Yang v Clement Chidekh | 3-6,3-6 |
| ITF M25 Saint Dizier | 2023/03/28 11:30 | Adan Freire Da Silva v Jimmy Yang | 1-6,1-6 |
| ITF M25 Saint Dizier | 2023/03/27 12:20 | Jimmy Yang v Tom Biston | 4-6,6-1,10-4 |
| ITF M25 Saint Dizier | 2023/03/26 09:45 | Jimmy Yang v Oscar Houille | 6-0,7-6 |
| ITF M15 Poitiers | 2023/03/16 13:55 | Antoine Ghibaudo v Jimmy Yang | 6-2,6-3 |
| ITF M15 Poitiers | 2023/03/15 16:15 | Jimmy Yang v Constantin Bittoun Kouzmine | 6-4,4-6,6-2 |