Thomas J Costigan
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Quebec op | ??/??/1981 | 495 |  Canada |
| NWC June op | 06/??/1980 | 520 |  United States |
| US op | ??/??/1977 | 178 | United States |
| Quebec op | ??/??/1977 | 528 | Canada |
Most Played Openings as White
| ECO | Opening | Games |
| B52 | Sicilian, Canal-Sokolsky attack, 3...Bd7 | 1 games |
| B06 | Robatsch (modern) defence | 1 games |
| B40 | Sicilian defence | 1 games |
| B17 | Caro-Kann, Steinitz variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C19 | French, Winawer, advance, 6...Ne7 | 2 games |
| B02 | Alekhine's defence | 1 games |
