Bill Osborne at Ontario Motor Speedway
Bill Osborne has made 4 NASCAR Cup Series starts at Ontario Motor Speedway since 1971, with 0 wins, 0 top-10s and an average finish of 35.8.
Totals at Ontario Motor Speedway by series
| Series | Starts | Wins | Top 5 | Top 10 | Laps led | Avg finish | Avg start | Best finish |
|---|---|---|---|---|---|---|---|---|
| Cup Series | 4 | 0 | 0 | 0 | 0 | 35.8 | 37.5 | 23 |
Every start at Ontario Motor Speedway
| Date | Race | Series | Start | Finish | Laps led | Status |
|---|---|---|---|---|---|---|
| November 20, 1977 | 1977 Los Angeles Times 500 | Winston Cup Series | 31 | 23 | 0 | Running |
| November 24, 1974 | 1974 Los Angeles Times 500 | Winston Cup Series | 34 | 28 | 0 | Transmission |
| March 5, 1972 | 1972 Miller High Life 500 | Winston Cup Series | 50 | 46 | 0 | A frame |
| February 28, 1971 | 1971 Miller High Life 500 | Winston Cup Series | 35 | 46 | 0 | Engine |