Herta has twice qualified P1 for the most recent races at Road America and Mid-Ohio, but having slumped from first to fifth in the former after a strategy error, he was the architect of his own downfall on Sunday when he got caught speeding in the pits.
Herta had already lost the lead to series dominator Alex Palou in the first round of pitstops and was battling to stay ahead of Scott Dixon in the final pit cycle when he slid sideways entering pitlane and didn't get his limiter control button to trigger properly.
