| event | round | table | player one | result | player two |
| Grand Prix Dallas 2000 | 13 | 10 | O'Mahoney-Schwartz, Steven (1772) | Lost 1-2 | Mandel, Danny (1685) |
| Grand Prix New Orleans 2001 | 6 | 3 | O'Mahoney-Schwartz, Steven (1747) | Draw 1-1 | Mandel, Danny (1752) |
| Pro Tour San Diego 2002 | 2 | 109 | O'Mahoney-Schwartz, Steven (1718) | Lost 0-2 | Mandel, Danny (1855) |
| Pro Tour Osaka 2002 | 7 | 77 | O'Mahoney-Schwartz, Steven (1754) | Lost 1-2 | Mandel, Danny (1827) |