
The second-year driver, who joined Andretti from AJ Foyt Enterprises for 2023, started on pole before leading 53 of the 85 laps, briefly losing the lead to Josef Newgarden of Team Penske.
But a great overcut on both Newgarden and Grosjean at the second pitstop saw him emerge in front and hold steady to the end, crossing the line a second ahead of his team-mate.