IndyCar Sonsio Grand Prix saw many drivers flourish over the race weekend as the 85-lap event was filled with entertainment as well as a rare occurrence of a caution.

Graham Rahal led a race-high 49 laps in Saturday's Sonsio Grand Prix on the IMS road course but was left to settle for sixth place.

Alex Palou continued his march toward history and immortality by winning the Sonsio Grand Prix on Saturday on the ...

It's Alex Palou up front again on the Indianapolis Motor Speedway road course. Here are the complete results and highlights.

INDIANAPOLIS — After 408 consecutive laps of green flag racing, the NTT IndyCar Series’ historic caution-free streak came to an end at the hands of David Malukas.

How the Sonsio Grand Prix at Indianapolis Motor Speedway road course gave IndyCar fans lots to look forward to in May ...

For a brief spell, it looked like Alex Palou might actually be beatable on the Indianapolis Motor Speedway road course. The ...

Follow live updates all race long during the Sonsio Grand Prix on the Indianapolis Motor Speedway road course.

This was Palou's fourth win in five races for a driver's best start to a season since AJ Foyt in 1964. That season, Foyt won ...

FOX Sports counts down the 25 most memorable moments in Indianapolis 500 history ahead of the 109th running on May 25 on FOX.

Qualifying for the Sonsio Grand Prix gave the IndyCar Series field its first look at the full potential of Rahal Letterman ...

Rookie Louis Foster (photo) looks for his first career NTT INDYCAR SERIES victory Saturday from the No. 3 starting spot.