J.D. McDuffie at Kingsport Speedway
J.D. McDuffie has made 3 NASCAR Cup Series starts at Kingsport Speedway since 1969, with 0 wins, 1 top-10 and an average finish of 15.3.
Totals at Kingsport Speedway by series
| Series | Starts | Wins | Top 5 | Top 10 | Laps led | Avg finish | Avg start | Best finish |
|---|---|---|---|---|---|---|---|---|
| Cup Series | 3 | 0 | 0 | 1 | 0 | 15.3 | 18.3 | 7 |
Every start at Kingsport Speedway
| Date | Race | Series | Start | Finish | Laps led | Status |
|---|---|---|---|---|---|---|
| May 23, 1971 | 1971 Kingsport 300 | Winston Cup Series | 19 | 24 | 0 | Oil leak |
| June 26, 1970 | 1970 Kingsport 100 | Grand National Series | 16 | 7 | 0 | Running |
| June 19, 1969 | 1969 Kingsport 250 | Grand National Series | 20 | 15 | 0 | Running |