| event | round | table | player one | result | player two |
| Pro Tour New Orleans 2003 | 15 | 8 | Walls, Gabe (1846) | Lost 1-2 | Oiso, Masashi (1926) |
| Grand Prix Hong Kong 2004 | 7 | 3 | Walls, Gabe (1963) | Lost 1-2 | Oiso, Masashi (1899) |
| Grand Prix Hong Kong 2004 | 14 | 1 | Walls, Gabe (1994) | ID | Oiso, Masashi (1971) |
| Grand Prix Boston 2005 | 14 | 7 | Walls, Gabe (1826) | Lost 1-2 | Oiso, Masashi (2024) |
| Pro Tour Honolulu 2006 | 13 | 21 | Walls, Gabe (1896) | Won 2-0 | Oiso, Masashi (2047) |