Overview
- On Sunday, Aug. 9, Alex Palou overtook pole-sitter Felix Rosenqvist with an overcut, led 60 of 110 laps and won the Grand Prix of Portland by about 4.12 seconds.
- Palou's team kept him out an extra lap in the opening green-flag pit sequence and used a mix of Firestone primary and alternate compounds to gain and protect track position.
- The race had one early caution for Graham Rahal and a retirement for Marcus Armstrong with an engine problem while Christian Lundgaard climbed from last on the grid to finish inside the top 10.
- Grid penalties and reliability remain factors in the title fight, with David Malukas serving a six-place engine-change penalty at Portland and several teams reporting engine issues that have forced changes or retirements.
- Felix Rosenqvist and Will Power publicly criticized IndyCar's treatment of lapped backmarkers after the race, and the series now heads to the inaugural Markham street race next weekend.