Rick Mast at Jefco Speedway
Rick Mast has made 3 NASCAR O'Reilly Series starts at Jefco Speedway since 1986, with 0 wins, 1 top-10 and an average finish of 17.7.
Totals at Jefco Speedway by series
| Series | Starts | Wins | Top 5 | Top 10 | Laps led | Avg finish | Avg start | Best finish |
|---|---|---|---|---|---|---|---|---|
| O'Reilly Series | 3 | 0 | 0 | 1 | 0 | 17.7 | 6.3 | 8 |
Every start at Jefco Speedway
| Date | Race | Series | Start | Finish | Laps led | Status |
|---|---|---|---|---|---|---|
| August 30, 1987 | 1987 World Crown 200 | Busch Grand National Series | 5 | 20 | 0 | Engine |
| July 5, 1987 | 1987 Budweiser 200 | Busch Grand National Series | 8 | 25 | 0 | Crash |
| May 10, 1986 | 1986 Budweiser 200 | Busch Grand National Series | 6 | 8 | 0 | Running |