Sean O'Brien
Irving, TXCareer Race Results
| Position | Race | Class | Date | Bike |
|---|---|---|---|---|
| 22 | Sears Point International Raceway | 500MX | June 29, 1980 | Maico |
| 22 | Atlanta International Raceway | 500MX | June 8, 1980 | Maico |
| 19 | Sunshine Speedway | 500MX | August 26, 1979 | Suzuki |
| 24 | Metrolina Speedway Park | 500MX | August 19, 1979 | Suzuki |
| 15 | Agency Motocross | 125MX | August 13, 1978 |