| Date | Race | Top Qualifiers | Final Results |
| March 15, 1998 | Homestead, Florida | 1. Greg Moore 2. Andre Ribeiro 3. Jimmy Vasser 4. Christian Fittipaldi 5. Adrian Fernandez 9. Patrick Carpentier 21. Paul Tracy | 1.
Michael Andretti 2. Greg Moore 3. Alex Zanardi 4. Christian Fittipaldi 5. Scott Pruett 11. Patrick Carpentier DNF - Paul Tracy |
| March 28, 1998 | Twin-Ring Motegi, Japan | 1. Jimmy Vasser 2. Adrian Fernandez 3. Gil de Ferran 4. Alex Zanardi 5. Greg Moore 16. Paul Tracy 20. Patrick Carpentier | 1. Adrian Fernandez 2. Al Unser, Jr. 3. Gil de Ferran 4. Greg Moore 5. Paul Tracy DNF - Patrick Carpentier |
| April 5, 1998 | Long Beach, California | 1. Bryan Herta 2. Bobby Rahal 3. Adrian Fernandez 4. Gualter Salles 5. Gil de Ferran 9. Paul Tracy 14. Greg Moore 26. Patrick Carpentier | 1. Alex Zanardi 2. Dario Franchitti 3. Bryan Herta 4. Adrian Fernandez 5. Tony Kanaan 6. Greg Moore DNF - Paul Tracy |
| April 27, 1998 | Nazareth, Pennsylvania | 1. Patrick Carpentier 2. Greg Moore 3. Michael Andretti 4. Gil de Ferran 5. Jimmy Vasser 10. Paul Tracy | 1.
Jimmy Vasser 2. Alex Zanardi 3. Greg Moore 4. Gil de Ferran 5. Paul Tracy 13. Patrick Carpentier |
| May 10, 1998 | Rio de Janeiro, Brazil | 1. Dario Franchitti 2. Alex Zanardi 3. Tony Kanaan 4. Gil de Ferran 5. Christian Fittipaldi 7. Greg Moore 9. Paul Tracy 17. Patrick Carpentier | 1. Greg Moore 2. Alex Zanardi 3. Adrian Fernandez 4. Bryan Herta 5. Michael Andretti DNF - Patrick Carpentier |
| May 24, 1998 | Gateway International | 1. Greg Moore 2. Jimmy Vasser 3. Tony Kanaan 4. J.J. Lehto 5. Dario Franchitti 15. Paul Tracy 16. Patrick Carpentier |
1. Alex Zanardi 2. Michael Andretti 3. Greg Moore 4. Jimmy Vasser 5. Scott Pruett 15. Patrick Carpentier DNF - Paul Tracy |
| May 31, 1998 | Milwaukee, Wisconsin | 1. Patrick Carpentier 2. Greg Moore 3. Andre Ribeiro 4. Michael Andretti 5. Jimmy Vasser 14. Paul Tracy | 1.
Jimmy Vasser 2. Helio Castro-Neves 3. Al Unser Jr. 4. Dario Franchitti 5. Bobby Rahal 7. Paul Tracy 13. Greg Moore |
| June 7, 1998 | Detroit, Michigan | 1. Greg Moore 2. Alex Zanardi 3. Adrian Fernandez 4. Richie Hearn 5. Bryan Herta 15. Paul Tracy 16. Patrick Carpentier |
1. Alex Zanardi 2. Adrian Fernandez 3. Gil de Ferran 4. Dario Franchitti 5. Greg Moore 7. Paul Tracy 15. Patrick Carpentier |
| June 21, 1998 | Portland, Oregon | 1. Bryan Herta 2. Dario Franchitti 3. Scott Pruett 4. Jimmy Vasser 5. Alex Zanardi 11. Patrick Carpentier 14. Greg Moore 20. Paul Tracy | 1. Alex Zanardi 2. Scott Pruett 3. Bryan Herta 4. Tony Kanaan 5. Al Unser Jr. 9. Patrick Carpentier DNF - Greg Moore |
| July 12, 1998 | Cleveland, Ohio |
1. Jimmy Vasser 2. Dario Franchitti 3. Alex Zanardi 4. Bryan Herontactta 5. Paul Tracy 12. Greg Moore 15. Patrick Carpentier | 1.
Alex Zanardi 2. Michael Andretti 3. Dario Franchitti 4. Scott Pruett 5. Adrian Fernandez 9. Patrick Carpentier DNF - Paul Tracy |
| July 19, 1998 | Toronto, Ontario, Canada | 1. Dario Franchitti 2. Alex Zanardi 3. Michael Andretti 4. Gil de Ferran 5. Christian Fittipaldi 10. Paul Tracy 12. Greg Moore 18. Patrick Carpentier | 1. Alex Zanardi
2. Michael Andretti 3. Jimmy Vasser 4. Bobby Rahal 5. Bryan Herta 11. Greg Moore 14. Paul Tracy DNF - Patrick Carpentier |
| July 26, 1998 | U.S. 500 (Michigan) | 1. Adrian Fernandez 2. Jimmy Vasser 3. Richie Hearn 4. Al Unser Jr. 5. Bryan Herta 14. Greg Moore 15. Paul Tracy 21. Patrick Carpentier | 1. Greg Moore 2. Jimmy Vasser 3. Alex Zanardi 4. Scott Pruett 5. Richie Hearn 8. Patrick Carpentier 9. Paul Tracy |
| August 9, 1998 | Mid-Ohio | 1.
Dario Franchitti 2. Jimmy Vasser 3. Bryan Herta 4. Mauricio Gugelmin 5. Adrian Fernandez 6. Greg Moore 9. Patrick Carpentier 21. Paul Tracy | 1. Adrian Fernandez 2. Scott Pruett 3. Bobby Rahal 4. Mauricio Gugelmin 5. Paul Tracy 7. Patrick Carpentier DNF - Greg Moore |
| August 16, 1998 | Road America |
1. Michael Andretti 2. Bryan Herta 3. Bobby Rahal 4. Scott Pruett 5. Gil de Ferran 8. Greg Moore 16. Patrick Carpentier 17. Paul Tracy | 1. Dario Franchitti 2. Alex Zanardi 3. Christian Fittipaldi 4. Tony Kanaan 5. Adrian Fernandez 6. Paul Tracy DNF - Greg Moore |
| September 6, 1998 | Vancouver, BC, Canada | 1. Dario Franchitti 2. Bryan Herta 3. Alex Zanardi 4. Greg Moore 5. Tony Kanaan 7. Paul Tracy 17. Patrick Carpentier | 1. Dario Franchitti 2. Michael Andretti 3. Scott Pruett 4. Alex Zanardi 5. Al Unser, Jr. 11. Paul Tracy DNF - Greg Moore |
| September 13, 1998 | Laguna Seca | 1. Bryan Herta 2. Dario Franchitti 3. Jimmy Vasser 4. Greg Moore 5. Alex Zanardi 18. Paul Tracy 20. Patrick Carpentier | 1. Bryan Herta 2. Alex Zanardi 3. Tony Kanaan 4. Dario Franchitti 5. Jimmy Vasser 8. Paul Tracy DNF - Patrick Carpentier |
| October 4, 1998 | Houston, Texas | 1. Greg Moore 2. Dario Franchitti 3. Jimmy Vasser 4. Paul Tracy 5. Christian Fittipaldi 25. Patrick Carpentier | 1. Dario
Franchitti 2. Alex Zanardi 3. Tony Kanaan 4. Jimmy Vasser 5. Max Papis DNF - Paul Tracy |
| October 18, 1998 | Surfer's Paradise Australia | 1. Dario Franchitti 2. Alex Zanardi 3. Christian Fittipaldi 4. Paul Tracy 5. Bryan Herta 9. Greg Moore 16. Patrick Carpentier | 1. Alex Zanardi 2. Dario Franchitti 3. Christian Fittipaldi 4. Scott Pruett 5. J.J. Lehto 8. Greg Moore 9. Patrick Carpentier DNF - Paul Tracy |
| November 1, 1998 | Fontana, California | 1. Scott Pruett 2. Jimmy Vasser 3. Michael Andretti 4. Richie Hearn 5. Bobby Rahal 9. Greg Moore 12. Paul Tracy 14. Patrick Carpentier | 1. Jimmy Vasser 2. Greg Moore 3. Alex Zanardi 4. Adrian Fernandez 5. Mauricio Gugelmin DNF - Paul Tracy |
| Place | Driver | Points |
| Alex Zanardi | ||
| Jimmy Vasser | ||
| Dario Franchitti | ||
| Adrian Fernandez | ||
| Greg Moore |
| |
| Scott Pruett | ||
| Michael Andretti | ||
| Bryan Herta | ||
| Tony Kanaan | ||
| Bobby Rahal | ||
| Paul Tracy |
| |
| Patrick Carpentier |
| Place | Driver | Points |
| Tony Kanaan | ||
| Helio Castro-Neves | ||
| J.J. Lehto | ||
| Alex Barron |
| Place | Country | Points | # of Drivers |
| United States |
| ||
| Italy | |||
| Brazil | |||
| Canada | |||
| Scotland |
| ||
| Mexico | |||
| England | |||
| Finland | |||
| Germany |
