Michael Andretti
| Runda | Tor | Data | Kierowca | Pojazd | Zespół |
|---|---|---|---|---|---|
| 1 |  Surfers Paradise | 1991.03.17 | Lola T9100 - Chevy | Hall-VDS Racing | |
| 2 | Long Beach | 1991.04.14 | Lola T9100 - Chevy | Galles-Kraco Racing | |
| 3 | Phoenix | 1991.04.21 | Lola T9100 - Chevy | Granatelli Racing Team | |
| 4 | Indianapolis | 1991.05.26 | Penske PC-20 - Chevy | Marlboro Team Penske | |
| 5 | Milwaukee Mile | 1991.06.02 | Lola T9100 - Chevy | Newman/Haas Racing | |
| 6 | Detroit | 1991.06.16 | Penske PC-20 - Chevy | Marlboro Team Penske | |
| 7 | Portland | 1991.06.23 | Lola T9100 - Chevy | Newman/Haas Racing | |
| 8 | Cleveland | 1991.07.07 | Lola T9100 - Chevy | Newman/Haas Racing | |
| 9 | Meadowlands | 1991.07.14 | Lola T9100 - Chevy | Galles-Kraco Racing | |
| 10 |  Toronto | 1991.07.21 | Lola T9100 - Chevy | Newman/Haas Racing | |
| 11 | Michigan | 1991.08.04 | Penske PC-20 - Chevy | Marlboro Team Penske | |
| 12 | Denver (Civic Center) | 1991.08.25 | Lola T9100 - Chevy | Galles-Kraco Racing | |
| 13 | Vancouver | 1991.09.01 | Lola T9100 - Chevy | Newman/Haas Racing | |
| 14 | Mid-Ohio | 1991.09.15 | Lola T9100 - Chevy | Newman/Haas Racing | |
| 15 | Elkhart Lake | 1991.09.22 | Lola T9100 - Chevy | Newman/Haas Racing | |
| 16 | Nazareth | 1991.10.06 | Lola T9100 - Chevy | Granatelli Racing Team | |
| 17 | Laguna Seca | 1991.10.19 | Lola T9100 - Chevy | Newman/Haas Racing |
