| Season | Series / Class | Standing | Team / Car / Races | ||
|---|---|---|---|---|---|
| 2013 | SP | ||||
| 2012 | SP | 13. |
|||
| GT | 110. |
||||
| 2011 | SP | ||||
| SP | 22. |
||||
| GT | 33. |
||||
| 2010 | GT | ||||
| GT | |||||
| GT | 11. |
||||
| SP | 32. |
||||
| 2009 | SP | 3. |
|||
| 2008 | SP | 7. |
|||
| 2007 | SP | 85. |
|||
| SP | 5. |
||||
| TC | 66. |
||||
| 2006 | SP | 4. |
|||
| SP | 14. |
||||
| 2005 | SP | 7. |
|||
| SP | 5. |
||||
| 2004 | SP | 8. |
|||
| SP | 3. |
||||
| 2003 | SP | 6. |
|||
| 2002 | SP | 13. |
|||
| SP | 25. |
||||
| SP | 6. |
||||
| Trans-Am Series, 2. | |||||
| GrandAm Series, 6. (Dyson-Riley&Scott) | |||||
| 2001 | SP | 16. |
|||
| SP | 2. |
||||
| 2000 | SP | 47. |
|||
| SP | 10. |
||||
| 1999 | American LeMans Series (Riley&Scott) | ||||
| US RoadRacing Championship, 9. (Riley&Scott) | |||||
| 1998 | SP | 22. |
|||
| US RoadRacing Championship WSC-Champion | |||||
| US RoadRacing Championship, 2. | |||||
| 1997 | GT | ||||
| IMSA Series WSC-Champion | |||||
| 1996 | IMSA Series WSC, 3. | ||||
| 1995 | IMSA Series WSC, 6. | ||||
| 1994 | NDays of Thunder Series Grand National Series | ||||
| 1993 | IMSA Series GT3-Champion | ||||
| 1992 | IMSA Series GT3-2. | ||||
| 1991 | IMSA Series Sedan Series, 5. | ||||
| IMSA Series GT3-6. | |||||
| 1990 | IMSA Series Sedan Series, 12. | ||||
| IMSA Series GT3-17. | |||||
| 12h Sebring GT3 Winner | |||||
| 1989 | IMSA Series | ||||
| 1988 | IMSA Series | ||||
| 1987 | IMSA Series (87) | ||||
|
|
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Legend :
Intermediate standings during the current season.
Wins and Top-Positions in season standings are marked.
When racing in several series in a season the chronologically later participation is always on top.
Intermediate standings during the current season.
Wins and Top-Positions in season standings are marked.
When racing in several series in a season the chronologically later participation is always on top.



