2007
| | IRL IndyCar Series | | Position: 32 (10 points) | 1 race. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: A.J. Foyt Enterprises | | Car: Dallara IR4 (Honda) |
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2006
| | IRL IndyCar Series | | Position: 30 (12 points) | 1 race. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Dreyer & Reinbold Racing | | Car: Dallara IR4 (Honda) |
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2004
| | IRL IndyCar Series | | Position: 23 (44 points) | 3 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Patrick Racing | | Car: Dallara IR2 - Chevrolet |
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2003
| | IRL IndyCar Series | | Position: 6 (374 points) | 16 races. 1 win. 0 pole positions. 1 podium. 0 fastest laps.
| | Team: Kelley Racing |
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2002
| | IRL IndyCar Series | | Position: 7 (311 points) | 13 races. 0 wins. 0 pole positions. 2 podiums. 0 fastest laps.
| | Team: Kelley Racing |
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2001
| | IRL IndyCar Series | | Position: 7 (287 points) | 13 races. 1 win. 0 pole positions. 2 podiums. 0 fastest laps.
| | Team: Galles |
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2000
| | IRL IndyCar Series | | Position: 9 (188 points) | 9 races. 1 win. 0 pole positions. 3 podiums. 0 fastest laps.
| | Team: Galles |
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1999
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1998
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1997
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1996
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1995
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1994
| | PPG Indy Car World Series | | Position: 1 (225 points) | 16 races. 8 wins. 4 pole positions. 11 podiums. 8 fastest laps.
| | Team: Penske |
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1993
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| | | NASCAR Winston Cup | | Position: 81 (55 points) | 1 race. 0 wins. 0 pole positions. 0 podiums. ? fastest laps. | | Car: Chevrolet | | Complete results needed. |
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1992
| | PPG Indy Car World Series | | Position: 3 (169 points) | 16 races. 1 win. 1 pole position. 6 podiums. 1 fastest lap.
| | Team: Galles-Kraco |
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1991
| | PPG Indy Car World Series | | Position: 3 (197 points) | 17 races. 2 wins. 0 pole positions. 7 podiums. 2 fastest laps.
| | Team: Galles-Kraco |
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1990
| | PPG Indy Car World Series | | Position: 1 (210 points) | 16 races. 6 wins. 1 pole position. 10 podiums. 6 fastest laps.
| | Team: Galles-Kraco |
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1989
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1988
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1987
| | PPG Indy Car World Series | | Position: 3 (107 points) | 15 races. 0 wins. 0 pole positions. 4 podiums. 0 fastest laps.
| | Team: Shierson |
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1986
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1985
| | PPG Indy Car World Series | | Position: 2 (150 points) | 15 races. 2 wins. 0 pole positions. 8 podiums. 2 fastest laps.
| | Team: Doug Shierson Racing | | Car: Lola T900 (Cosworth) |
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1984
| | PPG Indy Car World Series | | Position: 6 (103 points) | 16 races. 1 win. 0 pole positions. 3 podiums. 1 fastest lap.
| | Team: Galles Racing | | Car: March 84C (Cosworth) |
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1983
| | PPG Indy Car World Series | | Position: 7 (89 points) | 13 races. 0 wins. 0 pole positions. 2 podiums. 0 fastest laps.
| | Team: Galles Racing | | Car: Eagle 81 (Cosworth) | | Car: Eagle 83 (Cosworth) | | Car: March 83C (Cosworth) |
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1982
| | PPG Indy Car World Series | | Position: 21 (30 points) | 1 race. 0 wins. 0 pole positions. 0 podiums. ? fastest laps. | | Complete results needed. |
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1981
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