Jack Sprague at I-70 Speedway
Jack Sprague has made 5 NASCAR Truck Series starts at I-70 Speedway since 1995, with 1 win, 4 top-10s and an average finish of 7.4.
Totals at I-70 Speedway by series
| Series | Starts | Wins | Top 5 | Top 10 | Laps led | Avg finish | Avg start | Best finish |
|---|---|---|---|---|---|---|---|---|
| Truck Series | 5 | 1 | 2 | 4 | 73 | 7.4 | 5.8 | 1 |
Every start at I-70 Speedway
| Date | Race | Series | Start | Finish | Laps led | Status |
|---|---|---|---|---|---|---|
| May 22, 1999 | 1999 O'Reilly Auto Parts 200 | Craftsman Truck Series | 7 | 1 | 73 | Running |
| May 23, 1998 | 1998 Yellow Freight 200 | Craftsman Truck Series | 7 | 5 | 0 | Running |
| May 24, 1997 | 1997 Western Auto / Parts America 200 | Craftsman Truck Series | 3 | 10 | 0 | Running |
| July 27, 1996 | 1996 Western Auto 200 | Craftsman Truck Series | 5 | 14 | 0 | Running |
| May 27, 1995 | 1995 Western Auto 200 | SuperTruck Series | 7 | 7 | 0 | Running |