Persistent thunderstorms in the St. Louis area forced a shuffle of the schedule tonight and Sunday for the Bommarito Automotive Group 500 presented by Axalta and Valvoline at World Wide Technology Raceway, with two practice sessions scheduled tonight for the NTT INDYCAR SERIES on the 1.25-mile oval.

A 60-minute practice will start at 7:45 p.m. ET, followed by two 10-minute "high-line" practices divided by groups at 9 p.m. and 9:15 p.m. Teams must use primary Firestone tires during the "high-line" sessions. 

NTT P1 Award qualifying will start at 11 a.m. ET Sunday, followed by the race at 3:30 p.m., as scheduled. Peacock and the INDYCAR Radio Network will cover all practice sessions and qualifying live, with the 260-lap race being broadcast live on NBC, Peacock and the INDYCAR Radio Network.