Leon van der Heijden
| Runda | Tor | Data | Kierowca | Pojazd | Zespół |
|---|---|---|---|---|---|
| 1 |  Jerez | 1990.03.18 | Aprilia |  | |
| 2 |  Hungaroring | 1990.04.30 | Yamaha | | |
| 3 |  Hockenheimring | 1990.05.06 | Aprilia | | |
| 4 |  Rijeka | 1990.05.27 | Yamaha | | |
| 5 |  Zolder | 1990.06.17 | Aprilia | | |
| 6 | Assen | 1990.06.26 | Yamaha | | |
| 7 |  Anderstorp | 1990.07.08 | Yamaha | | |
| 8 |  Misano | 1990.08.19 | Aprilia | | |
| 9 | Monza | 1990.10.07 | Aprilia | |
