Stadium: Court 3 Round: 62 Ground: Hardcourt outdoor
| ITF - M15 Monastir | 2023/07/16 08:00 | Seita Watanabe v Alberto Bronzetti | 6-2,6-3 |
| ITF - M15 Monastir | 2023/07/12 09:25 | Seita Watanabe v Cyril Vandermeersch | 5-7,3-6 |
| ITF - M25 Santo Domingo | 2023/06/27 15:30 | Bernard Tomic v Seita Watanabe | 6-4,6-3 |
| ITF - M15 Santo Domingo | 2023/06/21 13:30 | Tauheed Browning v Seita Watanabe | 7-6,0-6,7-5 |
| ITF - M15 Karuizawa | 2023/05/31 01:00 | Jumpei Yamasaki v Seita Watanabe | 6-4,6-4 |
| UTR Pro Miki | 2023/02/12 02:00 | Tomohiro Masabayashi v Seita Watanabe | 4-6,1-5 |
| UTR Pro Miki | 2023/02/11 03:30 | Yuichiro Inui v Seita Watanabe | 6-7,6-7 |
| UTR Pro Miki | 2023/02/10 04:30 | Ren Nakamura v Seita Watanabe | 5-7,2-6 |
| ITF - M15 Monastir | 2023/07/10 08:30 | Ovchinnikov, Vyacheslav v Saveliy Ivanov | 3-6,3-6 |
| ITF - M15 Monastir | 2023/07/02 09:30 | Kalman Boyd v Ovchinnikov, Vyacheslav | 6-0,6-4 |
| ITF - M15 Antalya | 2023/04/30 07:00 | Ovchinnikov, Vyacheslav v Thijmen Loof | 0-6,6-7 |
| ITF - M15 Antalya | 2023/04/25 11:05 | Ovchinnikov, Vyacheslav v Fermin Tenti | 2-6,3-6 |
| ITF - M15 Antalya | 2023/04/16 07:00 | Larwig, Noel v Ovchinnikov, Vyacheslav | 6-2,6-1 |
| ITF - M15 Aktobe | 2023/02/27 08:50 | Erik Arutiunian v Ovchinnikov, Vyacheslav | 6-4,6-3 |
| ITF - M25 Antalya | 2022/11/07 07:25 | Giannicola Misasi v Ovchinnikov, Vyacheslav | 6-1,7-5 |
| ITF - M25 Antalya | 2022/11/06 05:30 | Alosha Ushakov, Nikita v Ovchinnikov, Vyacheslav | 5-7,5-7 |