Sumner McKnight at Riverside International Raceway
Sumner McKnight has made 6 NASCAR Cup Series starts at Riverside International Raceway since 1977, with 0 wins, 0 top-10s and an average finish of 20.5.
Totals at Riverside International Raceway by series
| Series | Starts | Wins | Top 5 | Top 10 | Laps led | Avg finish | Avg start | Best finish |
|---|---|---|---|---|---|---|---|---|
| Cup Series | 6 | 0 | 0 | 0 | 0 | 20.5 | 32 | 14 |
Every start at Riverside International Raceway
| Date | Race | Series | Start | Finish | Laps led | Status |
|---|---|---|---|---|---|---|
| June 2, 1985 | 1985 Budweiser 400 | Winston Cup Series | 32 | 14 | 0 | Running |
| November 18, 1984 | 1984 Winston Western 500 | Winston Cup Series | 37 | 19 | 0 | Running |
| June 3, 1984 | 1984 Budweiser 400 | Winston Cup Series | 27 | 25 | 0 | Engine |
| November 20, 1983 | 1983 Winston Western 500 | Winston Cup Series | 35 | 19 | 0 | Running |
| June 5, 1983 | 1983 Budweiser 400 | Winston Cup Series | 37 | 15 | 0 | Running |
| June 12, 1977 | 1977 NAPA 400 | Winston Cup Series | 24 | 31 | 0 | Engine |