Ratings
2004-09-26: 6th Open Dutch Othello Championships(Netherlands)
2004-06-12: 3e Iepen Fryske Othello Kampioenskippen(Netherlands)
2004-03-27 → 2004-03-28: EGP Bussum(Netherlands)
2004-03-21: Zonhoven 2(Belgium)
2004-02-15: 19th Dutch Othello Open(Netherlands)
2004-02-08: 1th Antwerp Othello Open(Belgium)
2004-01-11: 18th Dutch Othello Open(Netherlands)
| ROERADE Sanne | lost to | SEITS Roy |
| SEITS Roy | won against | IN HET ZANDT Bas |
| KORTENDIJK Albert | lost to | SEITS Roy |
| HOBO Roel | won against | SEITS Roy |
| SEITS Roy | lost to | VAN HEERE Mark |
| SEITS Roy | won against | VAN DEN BERG Erwin |
| AUBROECK Patrick | lost to | SEITS Roy |
| VAN DER WEYDE Esther | lost to | SEITS Roy |
| SEITS Roy | won against | REIJNDERS Ralph |
| SEITS Roy | won against | ROERADE Jeroen |
| VAN GIMST Anja | lost to | SEITS Roy |
| SEITS Roy | lost to | KORTENDIJK Albert |
| VERWEIJ Dennis | lost to | SEITS Roy |
| SEITS Roy | lost to | KAMPHUIS Leon |
| VAN DE ZANDE Josbert | won against | SEITS Roy |
| SEITS Roy | won against | DIEPENMAAT Jeroen |
| VERWEIJ Samantha | lost to | SEITS Roy |
| SEITS Roy | lost to | BERNER Johan |
| HOETJES Tim | won against | SEITS Roy |
| SEITS Roy | won against | JONGKIND Robbert |
| AUGUSTIJN Arjan | won against | SEITS Roy |
| VAN GIMST Anja | lost to | SEITS Roy |
| SEITS Roy | won against | ROGOSZ Magdalena |
| PRASEPTYO Linda | lost to | SEITS Roy |
| VUYE Cedric | lost to | SEITS Roy |
| SEITS Roy | won against | ROERADE Jeroen |
| LEVY-ABEGNOLI Thierry | won against | SEITS Roy |
| SEITS Roy | won against | REIJNDERS Ralph |
| HOBO Roel | won against | SEITS Roy |
| SEITS Roy | won against | LECAT Monique |
| QUAZZO Claude | won against | SEITS Roy |
| ROERADE Jeroen | won against | SEITS Roy |
| SEITS Roy | lost to | VAN DEN BESSELAAR Daniel |
| MEIJER Arnoud | lost to | SEITS Roy |
| SEITS Roy | won against | VAN DER WAGT Jan |
| NIESSEN Bart | won against | SEITS Roy |
| SEITS Roy | won against | VAN DUIN Jan |
| ANDRIANI Bintsa | lost to | SEITS Roy |
| SEITS Roy | won against | LEVY-ABEGNOLI Thierry |
| BERNER Johan | won against | SEITS Roy |
| SEITS Roy | won against | MARGARIT Eric |
| PRASEPTYO Linda | lost to | SEITS Roy |
| SEITS Roy | won against | TJASSENS Dennis |
| VAN DEN BIGGELAAR Nicky | won against | SEITS Roy |
| KORTENDIJK Albert | 32-32 | SEITS Roy |
| SEITS Roy | won against | KAMPHUIS Leon |
| DIEPENMAAT Jeroen | lost to | SEITS Roy |
| SEITS Roy | lost to | VAN TILBURG Daan |
| AUGUSTIJN Arjan | lost to | SEITS Roy |
| SEITS Roy | won against | VAN DER WEYDE Esther |
| VAN HEERE Mark | lost to | SEITS Roy |
| SEITS Roy | lost to | SHAMAN David |
2003-09-28: Zonhoven - Championnat de Belgique(Belgium)
2003-09-21: 5th Open Dutch Othello Championships(Netherlands)
2003-06-29 → 2003-06-30: EGP Amstelveen(Netherlands)
2003-04-06: 15th Dutch Othello Open(Netherlands)
2003-01-26: 13th Dutch Othello Open(Netherlands)
| YE Liya | won against | SEITS Roy |
| SEITS Roy | won against | VAN HEERE Mark |
| SEITS Roy | won against | TOMEI Robin |
| BONTE Jelle | lost to | SEITS Roy |
| SEITS Roy | lost to | DE WAEL Jeroen |
| HOEHNE Andreas | won against | SEITS Roy |
| TOMEI Robin | won against | SEITS Roy |
| SEITS Roy | won against | IN HET ZANDT Bas |
| VERWEIJ Dennis | lost to | SEITS Roy |
| SEITS Roy | lost to | VAN DER WAGT Ben |
| BOS Arjen | lost to | SEITS Roy |
| SEITS Roy | lost to | DE GRAAF Jan C. |
| VERHEIJ Danny | lost to | SEITS Roy |
| SEITS Roy | won against | REGTUIJT Casper |
| TASTET Marc | won against | SEITS Roy |
| SEITS Roy | won against | PRASEPTYO Linda |
| TOMEI Robin | won against | SEITS Roy |
| SEITS Roy | won against | DE GRAAF Jan C. |
| VAN DER WAGT Ben | won against | SEITS Roy |
| VAN SEGGELEN Trees | lost to | SEITS Roy |
| SEITS Roy | lost to | VERWEIJ Dennis |
| CORDY Alexandre | lost to | SEITS Roy |
| SEITS Roy | won against | VAN DEN BESSELAAR Daniel |
| QUAZZO Claude | won against | SEITS Roy |
| SEITS Roy | 32-32 | IN HET ZANDT Bas |
| BERG Matthias | won against | SEITS Roy |
| SEITS Roy | won against | DAM Francois |
| VAN DEN BIGGELAAR Nicky | won against | SEITS Roy |
| SEITS Roy | won against | BIARD Patricia |
| DE GRAAF Jan C. | lost to | SEITS Roy |
| SEITS Roy | won against | WESSELS Arne |
| SEITS Roy | won against | LE COMTE Michiel |
| HOBO Roel | lost to | SEITS Roy |
| SWINKELS Jan | lost to | SEITS Roy |
| SEITS Roy | won against | VAN BRUNSCHOT Chantall |
| VAN DE ZANDE Josbert | won against | SEITS Roy |
| SEITS Roy | lost to | DE GRAAF Jan C. |
| NIESSEN Bart | won against | SEITS Roy |
2002-09-22: 4th Open Dutch Othello Championships(Netherlands)
| SEITS Roy | won against | WITTING Sipke |
| VAN DE ZANDE Josbert | lost to | SEITS Roy |
| SEITS Roy | won against | VAN STRAELEN Victor |
| LE COMTE Michiel | lost to | SEITS Roy |
| SEITS Roy | lost to | BERG Matthias |
| CLAASSEN Mathijs | won against | SEITS Roy |
| SEITS Roy | won against | SALOMONS Roy |