| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Matulovic vs H Westerinen |
| ½-½ | 42 |
1967 |
Halle zt | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 2. Keres vs H Westerinen |
| ½-½ | 58 |
1968 |
Helsinki FIN-EST (18.05.68) | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 3. Browne vs H Westerinen |
| 0-1 | 37 |
1972 |
Skopje/Krusevo/Ohrid (Yugoslavia) | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 4. Matulovic vs H Westerinen |
| ½-½ | 63 |
1972 |
Helsinki | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 5. Parma vs H Westerinen |
| ½-½ | 63 |
1973 |
Dortmund (Germany) | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 6. Karpov vs H Westerinen |
 | 1-0 | 34 |
1974 |
10, Nice ol | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 7. J Peters vs H Westerinen |
| 1-0 | 48 |
1978 |
Lloyds Bank | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 8. Short vs H Westerinen |
| ½-½ | 76 |
1981 |
Brighton | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
