Stadium: MTA 04 Round: 62 Ground: Clay
| ITF M25 - Telavi | 2023/10/22 06:00 | Ivan Denisov v Roman Ruenger | 6-3,6-2 |
| ITF M25 - Telavi | 2023/10/16 06:00 | Roman Ruenger v Jeremy Gschwendtner | 1-6,2-6 |
| ITF M25 - Telavi | 2023/10/15 06:00 | Roman Ruenger v Savelii Shpita | 6-7,6-1,10-2 |
| ITF M25 - Esch/Alzette - Kvalifikation | 2023/07/16 09:25 | Mats Bredschneijder v Roman Ruenger | 6-2,6-3 |
| ITF M25 - Most | 2023/05/22 08:00 | Aleksandr Braynin v Roman Ruenger | 7-5,6-3 |
| ITF M15 - Pazardzhik | 2023/05/15 11:30 | Mihai Razvan Marinescu v Roman Ruenger | 7-5,6-1 |
| ITF M15 - Pazardzhik | 2023/05/15 07:00 | Roman Ruenger v Vardan Manukyan | 7-5,7-5 |
| ITF M15 - Alaminos-Larnaca | 2023/04/24 07:00 | Shinnosuke Hiramatsu v Roman Ruenger | 6-2,6-0 |
| ITF M15 - Antalya | 2023/12/18 11:40 | Pedro Iamachkine v Gabriel Matuszewski | 7-6,6-0 |
| ITF M15 - Antalya | 2023/12/17 07:00 | Gabriel Matuszewski v Axel Herberg Amoros | 6-7,7-6,10-4 |
| ITF M15 - Antalya | 2023/12/12 10:15 | Gabriel Matuszewski v Carlo Cataldi | 2-6,6-4,8-10 |
| ITF M15 - Antalya | 2023/12/12 06:00 | Pedro Iamachkine v Gabriel Matuszewski | 4-6,6-1,3-10 |
| ITF M15 - Antalya | 2023/12/10 07:00 | Joseph White v Gabriel Matuszewski | 3-6,3-6 |
| ITF M15 - Antalya | 2023/12/03 07:00 | Sergei Pogosian v Gabriel Matuszewski | 6-1,6-3 |
| ITF M25 - Heraklion | 2023/11/28 07:30 | Rodrigo Alujas v Gabriel Matuszewski | 4-6,6-3,10-7 |
| ITF M15 - Heraklion | 2023/11/21 07:00 | Lior Goldenberg v Gabriel Matuszewski | 7-6,6-7,10-5 |