2007
| | IRL IndyCar Series | | Position: 27 (17 points) | 1 race. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Andretti Green Racing | | Car: Dallara IR4 (Honda) |
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2006
| | Indianapolis 500 | |
| Race position: 3. | | Team: Andretti Green Racing | | Car: Dallara (Honda) |
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| | | IRL IndyCar Series | | Position: 24 (35 points) | 1 race. 0 wins. 0 pole positions. 1 podium. 0 fastest laps.
| | Team: Andretti Green Racing |
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2003
| | IRL IndyCar Series | | Position: 24 (80 points) | 4 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Andretti Green Racing |
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2002
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| | | IRL IndyCar Series | | Position: 38 (26 points) | 1 race. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Team Motorola |
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2001
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| | | IRL IndyCar Series | | Position: 34 (35 points) | 1 race. 0 wins. 0 pole positions. 1 podium. 0 fastest laps.
| | Team: Team Motorola |
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2000
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1999
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1998
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1997
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| | | Le Mans 24h - P class | |
| Race position: no position. | | Team: Sté Courage Compétition | | Car: Courage C36 (Porsche) | | Complete results needed. |
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1996
| | PPG Indy Car World Series | | Position: 2 (132 points) | 16 races. 5 wins. 0 pole positions. 6 podiums. 1 fastest lap.
| | Team: Newman/Haas |
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1995
| | PPG Indy Car World Series | | Position: 4 (123 points) | 17 races. 1 win. 3 pole positions. 4 podiums. 3 fastest laps.
| | Team: Newman/Haas | | Car: Lola T9500 (Ford XB) |
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1994
| | PPG Indy Car World Series | | Position: 4 (118 points) | 16 races. 2 wins. 0 pole positions. 3 podiums. 2 fastest laps.
| | Team: Chip Ganassi Racing | | Car: Reynard 941 (Ford XB) |
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1993
| | Formula 1 | | Position: 11 (7 points) | 13 races. 0 wins. 0 pole positions. 1 podium. 0 fastest laps.
| | Team: McLaren | | Car: McLaren MP4-8 - Ford |
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1992
| | PPG Indy Car World Series | | Position: 2 (192 points) | 16 races. 5 wins. 7 pole positions. 8 podiums. 5 fastest laps.
| | Team: Newman/Haas |
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1991
| | PPG Indy Car World Series | | Position: 1 (234 points) | 17 races. 8 wins. 8 pole positions. 11 podiums. 8 fastest laps.
| | Team: Newman/Haas |
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| | | IMSA Camel GTP Championship | | Position: 29 (18 points) | 1 race. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Joachen Dauer Racing | | Car: Porsche 962C |
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1990
| | PPG Indy Car World Series | | Position: 2 (181 points) | 16 races. 5 wins. 4 pole positions. 7 podiums. 5 fastest laps.
| | Team: Newman/Haas |
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1989
| | PPG Indy Car World Series | | Position: 3 (150 points) | 15 races. 2 wins. 2 pole positions. 6 podiums. 2 fastest laps.
| | Team: Newman/Haas |
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| | | IMSA Camel GTP Championship | | Position: no position | 1 race. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Busby Racing | | Car: Porsche 962 |
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1988
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1987
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| | | IMSA Camel GTP Championship | | Position: 40 (6 points) | 2 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Conte Racing, Hendrick Motorsport | | Car: March 86G (Buick) | | Car: Chevrolet Corvette GTP |
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| | | World Touring Car Championship | | Position: 38 (24 points) | 1 race. 0 wins. 0 pole positions. 0 podiums. ? fastest laps. | | Team: Alfa Corse | | Car: Alfa Romeo 75 Turbo | | Complete results needed. |
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1986
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1985
| | PPG Indy Car World Series | | Position: 9 (53 points) | 15 races. 0 wins. 0 pole positions. 1 podium. 0 fastest laps.
| | Team: Kraco Racing | | Car: March 85C (Cosworth) |
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1984
| | PPG Indy Car World Series | | Position: 7 (102 points) | 16 races. 0 wins. 0 pole positions. 5 podiums. 0 fastest laps.
| | Team: Kraco Racing | | Car: March 84C (Cosworth) |
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| | | IMSA Camel GT Championship | | Position: no position | 1 race. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Porsche AG | | Car: Porsche 962 |
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1983
| | Formula Mondial North America | | Position: 1 (188 points) | 9 races. 3 wins. 5 pole positions. 7 podiums. ? fastest laps. | | Team: Conte Racing | | Car: Ralt RT4 (Ford BDD) | | Complete results needed. |
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| | | PPG Indy Car World Series | | Position: 27 (4 points) | 3 races. 0 wins. 0 pole positions. 0 podiums. 0 fastest laps.
| | Team: Kraco Racing | | Car: March 83C (Cosworth) |
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1982
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1981
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