M. Mahaffy
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Michigan-ch Action | ??/??/1998 | 0 | United States |
Most Played Openings as White
| ECO | Opening | Games |
| D94 | Gruenfeld, 5.e3 | 1 games |
| B07 | Pirc defence | 1 games |
| D35 | Queen's Gambit Declined, 3...Nf6 | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B54 | Sicilian | 1 games |
| B21 | Sicilian, Grand Prix attack | 1 games |
| D02 | Queen's pawn game | 1 games |


United States