J.D. McDuffie at South Boston Speedway
J.D. McDuffie has made 4 NASCAR Cup Series starts at South Boston Speedway since 1968, with 0 wins, 2 top-10s and an average finish of 9.5.
Totals at South Boston Speedway by series
| Series | Starts | Wins | Top 5 | Top 10 | Laps led | Avg finish | Avg start | Best finish |
|---|---|---|---|---|---|---|---|---|
| Cup Series | 4 | 0 | 0 | 2 | 0 | 9.5 | 12.5 | 7 |
Every start at South Boston Speedway
| Date | Race | Series | Start | Finish | Laps led | Status |
|---|---|---|---|---|---|---|
| May 9, 1971 | 1971 Halifax County 100 | Winston Cup Series | 13 | 7 | 0 | Running |
| August 29, 1970 | 1970 Halifax County 100 | Grand National Series | 8 | 7 | 0 | Running |
| August 21, 1969 | 1969 South Boston 100 | Grand National Series | 19 | 12 | 0 | Running |
| August 23, 1968 | 1968 South Boston Speedway, August 23 | Grand National Series | 10 | 12 | 0 | Running |