Team Penske’s Will Power in the No.12 Verizon 5G Chevrolet set the fastest speed in the opening practice session at World Wide Technology Raceway.
Power who leads the championship by six points set a speed of 180.539MPH.
Alex Palou was second fastest for Chip Ganassi Racing with a speed of 180.208MPH ending the session just ahead of Felix Rosenqvist and Scott McLaughlin.
Marcus Ericsson in the No.8 Bryant Honda was fifth just ahead of Pato O’Ward and Graham Rahal.
Josef Newgarden was eighth fastest with a speed of 179.660MPH just ahead of Takuma Sato and Scott Dixon.
Devlin DeFrancesco in the No.29 PowerTap Andretti Steinbrenner Honda ended the session in P11 just ahead of Colton Herta and David Malukas. Alexander Rossi in the No.27 NAPA Auto Parts AutoNation Honda was 14th with a speed of 178.299MPH.
Jack Harvey was 15th just ahead of Kyle Kirkwood and Conor Daly.
Romain Grosjean was 18th in the No.28 NAPA Get Up And Go Honda just ahead of Christian Lundgaard and Helio Castroneves.
Simon Pagenaud was 21st just ahead of Callum Ilott while Rinus VeeKay was 23rd just ahead of Ed Carpenter and Dalton Kellett while Jimmie Johnson rounded out the order with a speed of 173.242.