| event | round | table | player one | result | player two |
| Grand Prix Minneapolis 2018 | 8 | 5 | Kumagai, Riku (2038) | Won 2-1 | Kowalski, Grzegorz (2215) |
| 2020 Grand Finals | 4 | 10 | Kumagai, Riku (2077) | Won 2-0 | Kowalski, Grzegorz (2202) |
| Kaldheim Championship | 5 | 25 | Kumagai, Riku (2070) | Won 2-0 | Kowalski, Grzegorz (2094) |