Simon Pagenaud extended his IndyCar championship lead after managing to hold off team-mate and rival Will Power to win the Honda Indy 200.
The Team Penske drivers crossed the line in first and second respectively on Sunday after a hard-fought duel in Mid-Ohio.
Pagenaud's win sees him extend his championship lead in the standings to 58 points over the Australian.
The victory was Pagenaud's fourth of 2016, ending a run of six races without topping the podium.
"It was fair and clean [the battle with Power]," Pagenaud said. "I never lost faith and when it was time to push it was easy to put down some fast laps."
Power rued his poor restart on lap 66, ultimately costing him the chance of back-to-back IndyCar wins.
"I was sleeping on the that bloody restart. I should have been more in it," Power said.
"Then I got on the marbles and it was a good clean battle [with Pagenaud]. He saw there was an opportunity and he was on top of it as he should."
Carlos Munoz completed the podium, while Graham Rahal and James Hinchcliffe rounded out the top five.