| event | round | table | player one | result | player two |
| Grand Prix Hiroshima 2011 | 4 | 138 | Kozaki, Yosuke (1518) | Won 2-0 | Koyama, Yuji (1570) |
| Grand Prix Kobe 2015 | 7 | 240 | Kozaki, Yosuke (1607) | Won 2-1 | Koyama, Yuji (1699) |
| Grand Prix Chiba 2018 | 6 | 572 | Kozaki, Yosuke (1543) | Won 2-0 | Koyama, Yuji (1797) |