| event | round | table | player one | result | player two |
| 2003 World Championship | 18 | 1 | Humpherys, David (1989) | Won 2-0 | Okamoto, Jin (2004) |
| Pro Tour San Diego 2004 | 5 | 108 | Humpherys, David (1955) | Draw 1-1 | Okamoto, Jin (1986) |
| Pro Tour San Diego 2004 | 11 | 7 | Humpherys, David (1949) | Won 2-0 | Okamoto, Jin (1983) |
| Pro Tour Columbus 2004 | 3 | 45 | Humpherys, David (1989) | Lost 1-2 | Okamoto, Jin (1834) |