J. Van Rooij
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Helmond op | 07/??/2003 | 587 | Netherlands |
| Helmond op | 06/??/2001 | 560 | Netherlands |
| Helmond op | 06/06/1993 | 566 | Netherlands |
Most Played Openings as White
| ECO | Opening | Games |
| B08 | Pirc, classical (two knights) system | 1 games |
| A53 | Old Indian defence | 1 games |
| A65 | Benoni, 6.e4 | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B07 | Pirc defence | 1 games |


Netherlands