A large multi-car crash occurred during the overtime restart of the Brickyard 400 as the field took the green flag on Lap 162. The accident brought out the third red flag of the race, which was originally scheduled for 160 laps.
As the field came to the start-finish line, the inside line bunched up. Michael McDowell got into the back of and spun Trevor Bayne, who was in the second row.
Bayne swerved right, bounced off Denny Hamiin before hitting the inside wall and McDowell, which bounced the No. 6 Ford back into traffic.
The resulting chaos collected Ryan Blaney, Austin Dillon, Aric Almirola and Gray Gaulding.
The red flag lasted 20 minutes and 20 seconds.