| event | round | table | player one | result | player two |
| Pro Tour Tokyo 2001 | 5 | 27 | Humpherys, David (1873) | Lost 0-2 | Ho, Ken (1747) |
| Pro Tour Chicago 2003 | 9 | 24 | Humpherys, David (1870) | Lost 1-2 | Ho, Ken (1912) |
| Grand Prix Oakland 2004 | F | Humpherys, David (2064) | Lost 0-2 | Ho, Ken (1878) |