| event | round | table | player one | result | player two |
| Pro Tour Rome 1998 | 8 | 14 | Williams, David A (1495) | Lost 0-0 | Comer, Alan (1658) |
| Grand Prix Boston 2001 | 4 | 75 | Williams, David A (1831) | Lost 1-2 | Comer, Alan (1614) |
| 2011 World Championship | 8 | 24 | Williams, David A (1848) | Won 2-0 | Comer, Alan (1642) |