O. Castelli
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Remedios de Escalada | ??/??/1949 | 0 |  Argentina |
Most Played Openings as White
| ECO | Opening | Games |
| D97 | Gruenfeld, Russian variation with e4 | 1 games |
| D43 | Queen's Gambit Declined semi-Slav | 1 games |
| E10 | Queen's pawn game | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B12 | Caro-Kann defence | 1 games |
| D67 | Queen's Gambit Declined, Orthodox defence, Bd3 line, Capablanca freeing manoevre | 1 games |
| B13 | Caro-Kann, exchange variation | 1 games |
