| UTR Pro Tennis Series California | 2022/05/27 18:30 | Rikuto Yamaguchi v John Kim | 1-6,0-5 |
| UTR Pro Calgary | 2023/06/13 21:00 | Rikuto Yamaguchi v Jonathan Irwanto | 7-6,7-6 |
| UTR Pro Calgary | 2023/06/12 20:58 | Rikuto Yamaguchi v Isaac Nortey | 5-7,6-7 |
| UTR Pro Tennis Series Barcellona | 2022/07/09 06:00 | Rikuto Yamaguchi v Pol Del Castillo | 1-2 |
| UTR Pro Tennis Series Barcellona | 2022/07/08 09:37 | Rikuto Yamaguchi v Jorge Plans | 6-3,6-4 |
| UTR Pro Tennis Series Barcellona | 2022/07/06 14:59 | Rikuto Yamaguchi v Teodor Giusca | 5-7,1-6 |
| UTR Pro Tennis Series Barcellona | 2022/07/05 06:00 | Rikuto Yamaguchi v Jordi Garcia Mestre | 1-6,7-5,4-5 |
| UTR Pro Tennis Series Barcellona | 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 Calgary | 2023/06/13 19:30 | Isaac Nortey v John Kim | 6-3,6-3 |
| UTR Pro Calgary | 2023/06/11 18:13 | John Kim v Daniel Kliebhan | 5-7,1-6 |
| UTR Pro Calgary | 2023/06/09 19:30 | Derrick Chen v John Kim | 7-5,5-2 |
| UTR Pro Calgary | 2023/06/08 22:30 | Junghee You v John Kim | 3-6,6-2,3-6 |
| UTR Pro Calgary | 2023/06/06 21:00 | Emmett Potter v John Kim | 7-5,6-2 |
| UTR Pro Calgary | 2023/06/05 21:00 | John Kim v Maxime Mareschal-Hay | 6-3,0-6,5-7 |
| UTR Pro Tennis Series California | 2022/08/06 17:00 | Adam Chodur v John Kim | 1-6,6-4,2-6 |
| UTR Pro Tennis Series California | 2022/08/05 18:30 | James Hopper v John Kim | 6-0,5-0 |