Sebastiaan Haverkate
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Hengelo U20 op | 08/??/2005 | 1853 | Netherlands |
| Stork Young Masters op | 08/??/2004 | 518 | Netherlands |
| Hengelo op U14 | 08/06/2001 | 0 | Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| C47 | Four knights, Scotch variation | 1 games |
| B01 | Scandinavian (centre counter) defence | 1 games |
| C50 | King's pawn game | 1 games |
| C02 | French, advance variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| A00 | Polish (Sokolsky) opening | 2 games |
| C50 | King's pawn game | 2 games |
| C45 | Scotch game | 1 games |
| D38 | Queen's Gambit Declined, Ragozin variation | 1 games |


Netherlands