Rick Mast NASCAR Xfinity Series results at Darlington
| Year | Race # | Start | Finish | Car # | Sponsor | Engine | Owner | Crew Chief | Qualifying Speed | Laps | X Led | Laps Led | Status | Money | Points | 
| 1985 | 6 | 24 | 8 | 44 | A.G. Dillard | Pontiac |  |  |  | 146 | 0 | 0 | running | 1895 | 142 | 
| 1985 | 20 | 12 | 7 | 44 | A.G. Dillard | Pontiac |  |  |  | 146 | 0 | 0 | running | 3330 | 146 | 
| 1986 | 6 | 9 | 26 | 22 | A.G. Dillard | Pontiac |  |  |  | 68 | 0 | 0 | engine | 980 | 85 | 
| 1986 | 24 | 20 | 28 | 22 | A.G. Dillard | Pontiac |  |  |  | 70 | 0 | 0 | accident | 1065 | 79 | 
| 1987 | 4 | 28 | 22 | 22 | A.G. Dillard | Pontiac |  |  |  | 140 | 0 | 0 | running | 1305 | 97 | 
| 1987 | 21 | 7 | 6 | 22 | Mast Racing | Buick |  |  |  | 147 | 0 | 0 | running | 3650 | 150 | 
| 1988 | 5 | 20 | 33 | 22 | Great Eastern Resorts | Buick |  |  |  | 93 | 0 | 0 | engine | 2780 | 64 | 
| 1988 | 24 | 21 | 12 | 22 | A.G. Dillard | Buick |  |  |  | 146 | 0 | 0 | running | 4375 | 127 | 
| 1989 | 5 | 15 | 13 | 22 | A.G. Dillard | Buick |  |  |  | 146 | 0 | 0 | running | 3582 | 124 | 
| 1989 | 23 | 4 | 24 | 22 | A.G. Dillard | Buick |  |  |  | 137 | 0 | 0 | running | 2650 | 91 | 
| 1990 | 6 | 15 | 14 | 22 | Raven Boats | Buick |  |  |  | 146 | 0 | 0 | running | 975 | 121 | 
| 1990 | 24 | 2 | 27 | 22 | Raven Boats | Buick |  |  |  | 139 | 0 | 0 | running | 1340 | 82 | 
| 1992 | 6 | 22 | 16 | 0 | Skoal Classic | Oldsmobile |  |  |  | 145 | 0 | 0 | running | 1455 | 115 | 
| 1992 | 25 | 19 | 14 | 0 | Skoal Classic | Oldsmobile |  |  |  | 145 | 0 | 0 | running | 1510 | 121 | 
| 1993 | 4 | 30 | 34 | 0 | Skoal Classic | Oldsmobile |  |  |  | 35 | 0 | 0 | engine | 2215 | 61 | 
| 1993 | 20 | 29 | 10 | 0 | Skoal | Chevrolet |  |  |  | 147 | 0 | 0 | running | 2935 | 134 |