| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. J Van Oosterom vs Tringov |
| ½-½ | 41 |
1955 |
Wch U20 final-A | E59 Nimzo-Indian, 4.e3, Main line |
| 2. G Timmerman vs J Van Oosterom |
| ½-½ | 41 |
1980 |
NED-ch10 corr | C84 Ruy Lopez, Closed |
| 3. H Rittner vs J Van Oosterom |
| ½-½ | 68 |
1991 |
NED jub25 corr9193 | B96 Sicilian, Najdorf |
| 4. G Timmerman vs J Van Oosterom |
| ½-½ | 50 |
1991 |
NED jub25 corr9193 | B93 Sicilian, Najdorf, 6.f4 |
| 5. E Bang vs J Van Oosterom |
| ½-½ | 30 |
1994 |
NOR jub50 corr | E15 Queen's Indian |
| 6. R Cayford vs J Van Oosterom |
| ½-½ | 58 |
1996 |
WC15 Final | C92 Ruy Lopez, Closed |
| 7. A Sychev vs J Van Oosterom |
| ½-½ | 38 |
1996 |
WC15 Final | C92 Ruy Lopez, Closed |
| 8. A Poulsen vs J Van Oosterom |
| ½-½ | 59 |
1996 |
WC15 Final | C88 Ruy Lopez |
| 9. J Van Oosterom vs V Maes |
| ½-½ | 48 |
1996 |
WC15 Final | D46 Queen's Gambit Declined Semi-Slav |
| 10. J Van Oosterom vs G Gottardi |
 | ½-½ | 54 |
1996 |
WC15 Final | A52 Budapest Gambit |
| 11. J Van Oosterom vs R Knobel |
| ½-½ | 31 |
1998 |
Korning Memorial | B66 Sicilian, Richter-Rauzer Attack, 7...a6 |
| 12. M Read vs J Van Oosterom |
| ½-½ | 33 |
1998 |
Korning Memorial | C69 Ruy Lopez, Exchange, Gligoric Variation, 6.d4 |
| 13. Hector vs J Van Oosterom |
| ½-½ | 22 |
1998 |
Korning Memorial | C78 Ruy Lopez |
| 14. C Hansen vs J Van Oosterom |
| ½-½ | 32 |
1998 |
Korning Memorial | C78 Ruy Lopez |
| 15. M Rufenacht vs J Van Oosterom |
| ½-½ | 51 |
1998 |
corr Korning Memorial -2001 | C47 Four Knights |
| 16. J Van Oosterom vs H M Elwert |
| ½-½ | 46 |
1999 |
NBC Millennium Email | B92 Sicilian, Najdorf, Opocensky Variation |
| 17. J Van Oosterom vs Ulf Andersson |
| ½-½ | 30 |
1999 |
NBC Millennium Email | B42 Sicilian, Kan |
| 18. E Bang vs J Van Oosterom |
| ½-½ | 35 |
1999 |
NBC Millennium Email | D76 Neo-Grunfeld, 6.cd Nxd5, 7.O-O Nb6 |
| 19. Ulf Andersson vs J Van Oosterom |
| ½-½ | 47 |
1999 |
NBC Millennium Email | E61 King's Indian |
| 20. J Van Oosterom vs H Tarnowiecki |
| ½-½ | 43 |
1999 |
NBC Millennium Email | C18 French, Winawer |
| 21. W Schoen vs J Van Oosterom |
| ½-½ | 49 |
2003 |
ICCF - corr | B90 Sicilian, Najdorf |
| 22. J Van Oosterom vs G Solis de Ovando |
| ½-½ | 45 |
2003 |
ICCF - corr | B39 Sicilian, Accelerated Fianchetto, Breyer Variation |
| 23. J Van Oosterom vs D Fleetwood |
| ½-½ | 58 |
2003 |
ICCF - corr | E12 Queen's Indian |
| 24. H M Elwert vs J Van Oosterom |
| ½-½ | 65 |
2003 |
ICCF - corr | B30 Sicilian |
| 25. M Umansky vs J Van Oosterom |
| ½-½ | 29 |
2003 |
ICCF - corr | E01 Catalan, Closed |