Team Penske’s Will Power in the No.12 Verizon 5G Chevrolet was fastest in the only practice session ahead of Saturday’s Detroit Grand Prix race one where he set a time of 01:17.2768s ending the session just ahead of an extremely impressive session for Sebastien Bourdais in the No.14 ROKiT Chevrolet for AJ Foyt Racing with a time of 01:17.4291s while Pato O’Ward in the No.5 Arrow McLaren SP Chevrolet was third.
Defending NTT IndyCar Series champion Scott Dixon in the No.9 PNC Bank Honda for Chip Ganassi Racing was the fastest Honda in fourth place with a time of 01:17.5143s.
Alexander Rossi says he feels good about the weekend as Andretti Autosport is in the window in fifth place just ahead of his teammate Colton Herta and Marcus Ericsson. Josef Newgarden in the No.2 Hitachi Team Penske Chevrolet was eighth fastest with a 01:18.0329s just ahead of Rinus Veekay in the No.21 Sonax Ed Carpenter Racing Chevrolet who launched his car over the curbs and was lucky to get away with not seriously damaging the car.
Ryan Hunter Reay in the No.28 DHL Honda rounded out the top ten for Andretti Autosport with a 01:18.2033s ending the session just ahead of his teammate James Hinchcliffe in the No.29 Genesys Honda who spun right at the end of the session recording a 01:18.4961s.
Takuma Sato was 12th fastest just ahead of Romain Grosjean who hung out at the top of the times early in the session and escaped a spin and near-miss but did a great job to recover with a time of 01:18.5852s ending the session ahead of Arrow McLaren SP’s Felix Rosenqvist in the No.7 Vuse Arrow McLaren SP Chevrolet.
Alex Palou who goes into Saturday’s race leading the championship was 15th for Chip Ganassi Racing in the No.10 American Legion Honda.
Graham Rahal in the No.15 Fifth Third Bank Honda was 16th just ahead of Conor Daly and Max Chilton while Simon Pagenaud in the No.22 Menards Chevrolet was 19th just ahead of Ed Jones.
Meyer Shank Racing’s Jack Harvey was 21st just ahead of Santino Ferrucci in the No.45 Hy-Vee Honda for RLL. Dalton Kellett was 23rd just ahead of Scott McLaughlin who only got five laps in during his run in the No.3 PPG Chevrolet after hitting the wall and breaking the front tow link while Jimmie Johnson was 25th in the No.48 Carvana Honda for Chip Ganassi Racing.