Jack Sprague at Portland Speedway
Jack Sprague has made 4 NASCAR Truck Series starts at Portland Speedway since 1995, with 0 wins, 4 top-10s and an average finish of 6.5.
Totals at Portland Speedway by series
| Series | Starts | Wins | Top 5 | Top 10 | Laps led | Avg finish | Avg start | Best finish |
|---|---|---|---|---|---|---|---|---|
| Truck Series | 4 | 0 | 2 | 4 | 0 | 6.5 | 9 | 4 |
Every start at Portland Speedway
| Date | Race | Series | Start | Finish | Laps led | Status |
|---|---|---|---|---|---|---|
| April 25, 1998 | 1998 Craftsman 200 Presented by NAPA Auto Parts | Craftsman Truck Series | 8 | 4 | 0 | Running |
| May 3, 1997 | 1997 Craftsman 200 | Craftsman Truck Series | 17 | 4 | 0 | Running |
| May 4, 1996 | 1996 Craftsman 200 | Craftsman Truck Series | 7 | 8 | 0 | Running |
| May 5, 1995 | 1995 Maxx Race Cards 200 | SuperTruck Series | 4 | 10 | 0 | Running |