Mark Petrelli
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Alphen aan den Rijn op | ??/??/1995 | 253 | Netherlands |
| Los Polvorines op | ??/??/1980 | 2224 | Argentina |
Most Played Openings as White
| ECO | Opening | Games |
| B23 | Sicilian, closed | 1 games |
| C00 | French defence | 1 games |
| B24 | Sicilian, closed | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| A42 | Modern defence, Averbakh system | 1 games |
| A85 | Dutch with c4 & Nc3 | 1 games |
| A83 | Dutch, Staunton gambit, Staunton's line | 1 games |
| B06 | Robatsch (modern) defence | 1 games |


Netherlands
Argentina