| event | round | table | player one | result | player two |
| Grand Prix Denver 2008 | 5 | 16 | Turtenwald, Owen (1840) | Lost 0-2 | Jacob, Michael (1587) |
| Grand Prix Dallas-Fort Worth 2011 | 15 | 1 | Turtenwald, Owen (2169) | ID | Jacob, Michael (1905) |
| Grand Prix Columbus 2012 | 12 | 12 | Turtenwald, Owen (1941) | Lost 0-2 | Jacob, Michael (1862) |
| Grand Prix Pittsburgh 2013 | 9 | 5 | Turtenwald, Owen (1985) | Lost 1-2 | Jacob, Michael (1924) |