| PSA World Championships | 2022/05/14 16:15 | Kobayashi, Ryosei v Nicolas Mueller | 0-3 |
| Malaysian Open | 2021/11/23 09:15 | Kobayashi, Ryosei v Khan, Asim | 3-0 |
| Czech Open | 2021/11/16 14:45 | Kobayashi, Ryosei v Juan Camilo Vargas | 2-3 |
| Qatar Classic | 2021/10/17 11:15 | Nicolas Mueller v Kobayashi, Ryosei | 3-2 |
| Egypt Open | 2021/09/10 17:30 | Kobayashi, Ryosei v Raphael Kandra | 0-3 |
| PSA World Championships | 2021/07/16 19:15 | Fares Dessouky v Kobayashi, Ryosei | 3-0 |
| PSA World Championships | 2021/07/15 19:15 | Mangaonkar, Mahesh v Kobayashi, Ryosei | 2-3 |
| Squash On Fire Open | 2021/06/30 21:45 | James Willstrop v Kobayashi, Ryosei | 3-1 |
| Lagord Open | 2022/11/01 16:00 | Sam Buckley v James Peach | 0-3 |