event | round | table | player one | result | player two |
Grand Prix Kyoto 2000 | 7 | 52 | Arita, Ryuichi (1550) | Lost 1-2 | Yokoyama, Tadashi (1573) |
Grand Prix Sendai 2001 | 12 | 11 | Arita, Ryuichi (1616) | Won 2-0 | Yokoyama, Tadashi (1731) |
Grand Prix Okayama 2004 | 12 | 8 | Arita, Ryuichi (1694) | Won 2-0 | Yokoyama, Tadashi (1792) |