Racing driver
Mark Shaffer
USA
Career
| Season | Level | Series / class | Pos. | Team / car / races |
|---|---|---|---|---|
| 2003 | GT | Grand-Am Sports Car Series, Class GTS | 44. |
- Main series of the season: highest share of races contested; series with few races and single races count less.
- 1. Positions 1–6 and wins.