
The 90-minute session was delayed by half an hour when a vintage IndyCar dropped oil on the track. Once the session got started, Romain Grosjean’s Andretti Autosport-Honda delivered a very consistent four laps to produce a 231.672, while Alex Palou ran three laps that dipped to 232.745-232.534.
Felix Rosenqvist’s Arrow McLaren SP-Chevrolet was able to split them, but then three-time polesitter Ed Carpenter’s first two laps were 233s, and his fourth had only dipped down to 232.689, so that his four-lap average was 232.958mph. Team Penske-Chevrolet’s only representative in the Top 12, 2018 winner Will Power, was a full 1mph off.