Marcos Sierra
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Asturias-chT | ??/??/1998 | 226 |  Spain |
| Asturias-chT | ??/??/1997 | 189 | Spain |
| Asturias Toran mem | ??/??/1997 | 0 | Spain |
Most Played Openings as White
| ECO | Opening | Games |
| B80 | Sicilian, Scheveningen variation | 1 games |
| C01 | French, exchange variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B01 | Scandinavian (centre counter) defence | 2 games |
| D05 | Queen's pawn game | 1 games |
| D10 | Queen's Gambit Declined Slav defence | 1 games |
| C30 | King's gambit | 1 games |
