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Drivers at the back of the pack collide at the start of Saturday's NTT IndyCar Series event at World Wide Technology Raceway. (IndyCar Photo)

Will Power (12) leads the pack during Saturday's NTT IndyCar Series race at World Wide Technology Raceway. (IndyCar Photo)

Santino Ferrucci (18) races ahead of Pato O'Ward during Saturday's NTT IndyCar Series race at World Wide Technology Raceway. (IndyCar Photo)

Alex Palou (55) leads Rinus VeeKay during Saturday's NTT IndyCar Series race at World Wide Technology Raceway. (IndyCar Photo)

Simon Pagenaud (22) races ahead of Santino Ferrucci during Saturday's NTT IndyCar Series race at World Wide Technology Raceway. (IndyCar Photo)

Santino Ferrucci (18) leads a group of cars during Saturday's NTT IndyCar Series race at World Wide Technology Raceway. (IndyCar Photo)