| Position | Race | Class | Date | Machine |
|---|---|---|---|---|
| 17 | Lakewood Sports Cycle Park | 250MX 450 Class | June 15, 1980 | Yamaha |
| 14 | Saddleback Park | 250MX 450 Class | March 30, 1980 | Yamaha |
| 12 | High Point Raceway | 250MX 450 Class | July 8, 1979 | Suzuki |
| 12 | Sears Point International Raceway | 250MX 450 Class | June 17, 1979 | Suzuki |
| 18 | Omaha Moto Park | 250MX 450 Class | April 22, 1979 | Suzuki |
| 5 | Canyon Raceway | 250MX 450 Class | April 8, 1979 | Suzuki |
| 4 | Racing World | 250MX 450 Class | April 1, 1979 | Suzuki |
| 24 | Sears Point International Raceway | 500MX 500MX | June 11, 1978 | Yamaha |
