Sebastiaan Van Opheusden
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Arnhem op | 08/31/2007 | 1493 | Netherlands |
| Hengelo op U12 | 08/06/2001 | 0 | Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| C44 | King's pawn game | 2 games |
| B52 | Sicilian, Canal-Sokolsky attack, 3...Bd7 | 1 games |
| C66 | Ruy Lopez, Berlin defence, 4.O-O, d6 | 1 games |
| B06 | Robatsch (modern) defence | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B53 | Sicilian, Chekhover variation | 1 games |
| B50 | Sicilian | 1 games |
| B08 | Pirc, classical (two knights) system | 1 games |
| B70 | Sicilian, dragon variation | 1 games |


Netherlands