Kraj:
Stany Zjednoczone
Ilość zwycięstw:18
| Zwycięstwa wg roku | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
1
1974
|
1975
|
1976
|
2
1977
|
2
1978
|
1
1979
|
1980
|
3
1981
|
1
1982
|
1
1983
|
1
1984
|
2
1985
|
2
1986
|
1987
|
2
1988
|
| LP | Tor | Ilość zwycięstw |
|---|---|---|
| 1 | Sears Point |
3 |
| 2 | Road America |
3 |
| 3 | Road Atlanta |
2 |
| 4 | Hallett |
2 |
| 5 | Watkins Glen |
2 |
| 6 |  Magdalena Mixhuca |
1 |
| 7 | Portland |
1 |
| 8 | Sebring |
1 |
| 9 | Riverside |
1 |
| 10 | Laguna Seca |
1 |
| 11 | Pocono |
1 |
| LP | Producent | Ilość zwycięstw |
|---|---|---|
| 1 |  Toyota |
8 |
| 2 |  Porsche |
7 |
| 3 | BMW |
3 |
| LP | Partner | Ilość zwycięstw |
|---|---|---|
| 1 | Chuck Kendall |
2 |
| 2 | Pete Smith |
2 |
| 3 | Chris Cord |
2 |
| 4 | Adrian Gang |
1 |
| 5 | Wally Dallenbach Jr |
1 |
| 6 | Whitney Ganz |
1 |
| 7 | Rocky Moran |
1 |
