Callum Ilott edged Alex Palou for top honors in the third session of The Thermal Club Million Dollar Challenge. Palou grabbed fast time early as he did yesterday, but Ilott, arguably the best Indycar driver not driving full time in Indycar, passed him before a 50 minute stoppage to repair broken asphalt in turn 5 halted action.

Ilott and Palou are the only drivers to turn a lap in less than 99 seconds.

Indycar extended the session by 15 minutes, but the extra time was chewed up by red flags for Romain Grosjean, who spun and stalled, and Kyle Kirkwood, lost control in turn 8 and made rear contact with the armco. The damage was not serious, and Kirkwood returned for the final 15 minutes of practice.

The final two hour practice session begins at 4 pm Eastern, followed by qualifying at 8 Eastern.

Results: