Bill Osborne at Riverside International Raceway
Bill Osborne has made 8 NASCAR Cup Series starts at Riverside International Raceway since 1971, with 0 wins, 0 top-10s and an average finish of 26.4.
Totals at Riverside International Raceway by series
| Series | Starts | Wins | Top 5 | Top 10 | Laps led | Avg finish | Avg start | Best finish |
|---|---|---|---|---|---|---|---|---|
| Cup Series | 8 | 0 | 0 | 0 | 0 | 26.4 | 31.4 | 16 |
Every start at Riverside International Raceway
| Date | Race | Series | Start | Finish | Laps led | Status |
|---|---|---|---|---|---|---|
| June 1, 1986 | 1986 Budweiser 400 | Winston Cup Series | 42 | 35 | 0 | Engine |
| November 17, 1985 | 1985 Winston Western 500 | Winston Cup Series | 36 | 24 | 0 | Running |
| June 2, 1985 | 1985 Budweiser 400 | Winston Cup Series | 33 | 21 | 0 | Running |
| January 13, 1980 | 1980 Winston Western 500 | Winston Cup Series | 33 | 37 | 0 | Rear end |
| June 8, 1975 | 1975 Tuborg 400 | Winston Cup Series | 30 | 26 | 0 | Engine |
| January 19, 1975 | 1975 Winston Western 500 | Winston Cup Series | 11 | 16 | 0 | Engine |
| January 26, 1974 | 1974 Winston Western 500 | Winston Cup Series | 31 | 26 | 0 | Engine |
| June 20, 1971 | 1971 Winston Golden State 400 | Winston Cup Series | 35 | 26 | 0 | Engine |