Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2023/04/17 12:30 | Shunsuke Nakagawa v Omar Brigida | 6-1,7-5 |
| ITF M15 Monastir | 2023/04/17 08:00 | Sebastian Sorger v Shunsuke Nakagawa | 2-6,6-3,6-10 |
| ITF M15 Monastir | 2023/04/16 09:00 | Jinpeng Tang v Shunsuke Nakagawa | 1-6,1-6 |
| ITF M25 Kashiwa | 2023/04/02 02:30 | Yuttana Charoenphon v Shunsuke Nakagawa | 7-6,6-3 |
| ITF M25 Tsukuba | 2023/03/27 05:30 | Ko Suzuki v Shunsuke Nakagawa | 6-2,6-4 |
| ITF M25 Tsukuba | 2023/03/27 00:30 | Shunsuke Nakagawa v Tomohiro Masabayashi | 5-7,6-3,10-7 |
| Challenger Matsuyama | 2022/11/06 03:45 | Jason Jung v Shunsuke Nakagawa | 6-1,6-1 |
| ITF M25 Sapporo | 2022/09/08 03:20 | Keisuke Saitoh v Shunsuke Nakagawa | 6-1,6-2 |
| ITF M15 Monastir | 2023/04/13 08:30 | Szymon Kielan v Daniel Rodrigues | 2-6,2-6 |
| ITF M15 Monastir | 2023/04/12 08:30 | Szymon Kielan v David Perez Sanz | 7-6,6-3 |
| ITF M25 Trnava | 2023/03/28 13:25 | Szymon Kielan v Hynek Barton | 6-4,2-6,4-6 |
| ITF M15 Monastir | 2023/03/17 11:00 | Olaf Pieczkowski v Szymon Kielan | 6-1,6-1 |
| ITF M15 Monastir | 2023/03/16 12:40 | Lorenzo Carboni v Szymon Kielan | 6-7,6-1,4-6 |
| ITF M15 Monastir | 2023/03/14 12:40 | Josh Roe Flannelly v Szymon Kielan | 2-6,3-6 |
| ITF M15 Monastir | 2023/03/09 11:30 | Szymon Kielan v Lorenzo Carboni | 3-6,3-6 |
| ITF M15 Monastir | 2023/03/07 13:15 | Szymon Kielan v Franco Roncadelli | 6-0,5-7,6-3 |