O. Yamamoto
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Sao Paulo Itau Cup 7th | 10/??/2003 | 1162 |  Brazil |
Most Played Openings as White
| ECO | Opening | Games |
Most Played Openings as Black
| ECO | Opening | Games |
| B01 | Scandinavian (centre counter) defence | 1 games |
