Sumner McKnight NASCAR Cup Series results at Riverside
| Year | Race # | Start | Finish | Car # | Sponsor | Engine | Owner | Crew Chief | Qualifying Speed | Laps | X Led | Laps Led | Status | Money | Points | 
| 1977 | 14 | 24 | 31 | 82 | Action Engineering | Chevrolet |  |  |  | 15 | 0 | 0 | oil pressure | 650 | 70 | 
| 1983 | 13 | 37 | 15 | 83 | Chuck E. Cheese | Chevrolet | McKnight |  |  | 90 | 0 | 0 | running | 2860 | 118 | 
| 1983 | 30 | 35 | 19 | 83 | McKnight Racing | Chevrolet | McKnight |  |  | 114 | 0 | 0 | running | 2415 | 106 | 
| 1984 | 13 | 27 | 25 | 83 | Aero Wash | Chevrolet | McKnight |  |  | 76 | 0 | 0 | engine | 1960 | 88 | 
| 1984 | 30 | 37 | 19 | 83 | Aero Wash | Chevrolet | McKnight |  |  | 116 | 0 | 0 | running | 3180 | 106 | 
| 1985 | 12 | 32 | 14 | 83 | Aerowash | Ford | McKnight |  |  | 91 | 0 | 0 | running | 3985 | 121 |