Donald R Cotton
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| US op | ??/??/1995 | 425 |  United States |
| US op | ??/??/1993 | 713 | United States |
| USA-72ch | ??/??/1971 | 0 | United States |
Donald R Cotton Repertoire with White pieces (most played)
| ECO | Opening | Games |
| C53 | Giuoco Piano | 1 games |
| B01 | Scandinavian (centre counter) defence | 1 games |
| C42 | Petrov's defence | 1 games |
| B22 | Sicilian, Alapin's variation (2.c3) | 1 games |
Donald R Cotton Repertoire with Black pieces (most played)
| ECO | Opening | Games |
| C55 | Two knights defence | 1 games |
| C44 | King's pawn game | 1 games |
| C63 | Ruy Lopez, Schliemann defence | 1 games |
| C54 | Giuoco Piano | 1 games |
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