| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. J Sinke vs J Van Oosterom |
 | 0-1 | 12 |
1981 |
corres NLD | C33 King's Gambit Accepted |
| 2. J Van Oosterom vs G Timmerman |
 | 0-1 | 31 |
1982 |
Volmac-A corr8286 | C47 Four Knights |
| 3. J J Carleton vs J Van Oosterom |
| 0-1 | 27 |
1989 |
Corr. World Ch. 1987/89 | C55 Two Knights Defense |
| 4. J A Barlow vs J Van Oosterom |
 | 0-1 | 17 |
1996 |
WC15 Final | B92 Sicilian, Najdorf, Opocensky Variation |
| 5. J Vitomskis vs J Van Oosterom |
| 0-1 | 50 |
1996 |
WC15 Final | C92 Ruy Lopez, Closed |
| 6. J Van Oosterom vs G Timmerman |
 | 0-1 | 64 |
1996 |
WC15 Final | E98 King's Indian, Orthodox, Taimanov, 9.Ne1 |
| 7. D Kilgour vs J Van Oosterom |
| 0-1 | 63 |
1996 |
WC15 Final | C92 Ruy Lopez, Closed |
| 8. V Gefenas vs J Van Oosterom |
| 0-1 | 37 |
1996 |
WC15 Final | E92 King's Indian |
| 9. J Trapl vs J Van Oosterom |
| 0-1 | 31 |
1998 |
corr Korning Memorial -2001 | E60 King's Indian Defense |
| 10. S Jardorf vs J Van Oosterom |
| 0-1 | 53 |
1998 |
Korning Memorial | B22 Sicilian, Alapin |
| 11. H M Elwert vs J Van Oosterom |
| 0-1 | 32 |
1998 |
Korning Memorial | E97 King's Indian |
| 12. G Timmerman vs J Van Oosterom |
| 0-1 | 70 |
1999 |
NBC Millennium Email | B90 Sicilian, Najdorf |
| 13. H E van Kempen vs J Van Oosterom |
| 0-1 | 42 |
2003 |
ICCF - corr | B90 Sicilian, Najdorf |
| 14. H Tiemann vs J Van Oosterom |
| 0-1 | 54 |
2003 |
ICCF - corr | B90 Sicilian, Najdorf |
| 15. M Mraz vs J Van Oosterom |
| 0-1 | 45 |
2003 |
ICCF - corr | E58 Nimzo-Indian, 4.e3, Main line with 8...Bxc3 |