The substitute driver for the injured David Malukas, piloting the No. 6 Arrow McLaren Chevrolet, swiftly ascended to the top of the charts within the opening 15 minutes of the session. His blistering lap of 1m38.7784s at the 3.067-mile, 17-turn circuit remained unmatched throughout the session.
Alex Palou of Chip Ganassi Racing trailed in second place, just 0.0524s adrift, following his dominant performance in Friday’s practice sessions. Christian Lundgaard of Rahal Letterman Lanigan Racing, Scott McLaughlin of Team Penske, and Pato O’Ward of Arrow McLaren completed the top five, with the entire top five separated by a mere 0.3407s.
Marcus Armstrong of Chip Ganassi Racing, Romain Grosjean of Juncos Hollinger Racing, and Colton Herta of Andretti Global secured positions sixth through eighth, respectively. The Meyer Shank Racing duo of Felix Rosenqvist and Tom Blomqvist rounded out the top ten.
Despite enduring three red flag interruptions during the two-hour test session, teams managed to gather crucial data ahead of Sunday’s $1 Million Challenge. The final session is slated for 4 p.m. ET, with qualifying for today’s heat races scheduled at 8 p.m. ET.