| event | round | table | player one | result | player two |
| Grand Prix Tokyo 2016 | 12 | 5 | Kumagai, Riku (2070) | Won 2-1 | Kawasaki, Keita (2019) |
| Grand Prix Beijing 2017 | 7 | 7 | Kumagai, Riku (2105) | Won 2-1 | Kawasaki, Keita (2031) |
| Grand Prix Beijing 2017 | 13 | 74 | Kumagai, Riku (2180) | Lost 1-2 | Kawasaki, Keita (2075) |
| Grand Prix Bangkok 2019 | 8 | 10 | Kumagai, Riku (2094) | Won 2-0 | Kawasaki, Keita (1933) |