Stadium: Court 5 Round: 62 Ground: Clay
| ITF M15 Novi Sad | 2023/07/23 07:00 | Ostapenkov, Daniil v Milanovic, Dusan | 3-6,2-6 |
| ITF M15 Tianjin | 2023/07/08 01:30 | 리, 저 v Ostapenkov, Daniil | 6-3,6-4 |
| ITF M15 Tianjin | 2023/07/07 01:30 | Ostapenkov, Daniil v 왕, 추캉 | 6-7,6-4,6-4 |
| ITF M15 Tianjin | 2023/07/06 01:30 | 리아오넨카, 알리아크산들 v Ostapenkov, Daniil | 1-6,2-6 |
| ITF M15 Tianjin | 2023/07/04 07:35 | 모, 예충 v Ostapenkov, Daniil | 2-6,4-6 |
| ITF M15 Tbilisi | 2023/05/02 08:20 | 엘리스, 블랙 v Ostapenkov, Daniil | 6-4,7-6 |
| ITF M25 Tbilisi | 2023/05/01 06:00 | Ostapenkov, Daniil v 일켈, 베르크 | 7-5,6-7,10-3 |
| ITF M25 Tbilisi | 2023/04/26 07:30 | Ostapenkov, Daniil v Ron Ellouck | 2-6,4-6 |
| ITF M25 Bacau | 2023/07/23 08:30 | Formella, Leon v 알렌, 루이스 | 2-6,4-6 |
| ITF M15 Uslar | 2023/07/17 09:00 | Formella, Leon v 슈이프리스, 제레미 | 1-6,1-6 |
| ITF M25 Grasse | 2023/06/12 07:30 | Pablo Trochu v Formella, Leon | 6-1,6-0 |
| ITF M25 Grasse | 2023/06/11 10:25 | Formella, Leon v Laurent Julia Calac | 6-3,7-5 |
| ITF M25 Jablonec Nad Nisou | 2023/05/28 09:00 | Formella, Leon v 제니케크, 지리 | 2-6,3-6 |
| ITF M25 Most | 2023/05/22 08:00 | Michael Agwi v Formella, Leon | 6-2,6-0 |
| ITF M25 Most | 2023/05/21 08:00 | Formella, Leon v Mazur, Artem | 6-3,6-2 |
| ITF M15 Krsko | 2023/05/15 12:30 | 캠파나, 페데리코 v Formella, Leon | 6-2,6-0 |