John Petrison
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| San Francisco TNM Summer op | 06/06/2006 | 1682 | United States |
| San Francisco TNM Winter op | 01/10/2006 | 1639 | United States |
Most Played Openings as White
| ECO | Opening | Games |
| A45 | Queen's pawn game | 2 games |
| B12 | Caro-Kann defence | 1 games |
| B00 | King's pawn opening | 1 games |
| C18 | French, Winawer, advance variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| D48 | Queen's Gambit Declined semi-Slav, Meran, 8...a6 | 1 games |
| D03 | Torre attack (Tartakower variation) | 1 games |
| C28 | Vienna game | 1 games |
| C44 | King's pawn game | 1 games |


United States