| UTR Pro Tennis Series Barcelona | 2022/07/09 06:00 | Rikuto Yamaguchi v Pol Del Castillo | 1-2 |
| UTR Pro Tennis Series Barcelona | 2022/07/08 09:37 | Rikuto Yamaguchi v Jorge Plans | 6-3,6-4 |
| UTR Pro Tennis Series Barcelona | 2022/07/06 14:59 | Rikuto Yamaguchi v Teodor Giusca | 5-7,1-6 |
| UTR Pro Tennis Series Barcelona | 2022/07/05 06:00 | Rikuto Yamaguchi v Jordi Garcia Mestre | 1-6,7-5,4-5 |
| UTR Pro Tennis Series Barcelona | 2022/07/03 15:28 | Pol Amoros Ramos v Rikuto Yamaguchi | 2-6,7-6,5-4 |
| UTR Pro Tennis Series California | 2022/05/27 18:30 | Rikuto Yamaguchi v John Kim | 1-6,0-5 |
| UTR Pro Tennis Series California | 2022/05/25 19:30 | Jacob Bullard v Rikuto Yamaguchi | 7-6,6-1 |
| UTR Pro Tennis Series California | 2022/05/25 01:17 | Quang Duong v Rikuto Yamaguchi | 6-7,4-6 |
| ITF M25 Monastir | 2023/02/20 14:30 | Mischa Zverev v Ryotaro Taguchi | 6-2,6-1 |
| ITF M25 Monastir | 2023/02/20 10:10 | Ryotaro Taguchi v Marc Antoine Gaillard | 6-1,6-3 |
| UTR Pro Miki | 2023/02/11 00:30 | Yuta Kawahashi v Ryotaro Taguchi | 6-0,6-4 |
| UTR Pro Miki | 2023/02/10 05:30 | Ryohei Takase v Ryotaro Taguchi | 1-6,7-5,1-6 |
| UTR Pro Miki | 2023/02/09 03:30 | Ren Nakamura v Ryotaro Taguchi | 4-6,5-7 |
| UTR Pro Miki | 2023/02/06 03:30 | Ryotaro Taguchi v Seita Watanabe | 6-2,6-7,7-6 |
| ITF M15 Monastir | 2023/01/04 12:20 | Peter Fajta v Ryotaro Taguchi | 6-2,6-3 |
| ITF M15 Monastir | 2023/01/02 16:30 | Ryotaro Taguchi v Vadym Konovchuk | 6-4,6-1 |