The 22-year-old Dane had a clear session compared to his rivals, going to the highest with a flying lap at 1m07.6154s across the 11-turn, 2.238-mile street course.
Purple flags grew to become the theme as soon as once more in Saturday morning’s session.
The primary stoppage got here out after 9 minutes when McLaren’s Pato O’Ward obtained off form getting into Flip 3, skidding astray into the tyre barrier with minor injury to his automotive’s left entrance nook.
“It is only a driver mistake, I feel I touched a white line on the curb,” O’Ward stated after his mount was towed again to the paddock. “It was simply an excessive amount of assault for what was accessible.”
Colton Herta put his Andretti Autosport Honda on the prime moments earlier than O’Ward’s shunt with a lap at 1m07.8880s. The session resumed after a 7m33s stoppage, with Rossi flexing the energy of his #7 Arrow McLaren Chevrolet and vaulting to first with a flying lap of 1m07.8522s.
A second purple flag got here after Will Power misplaced management of the backend of his Chevrolet-powered Team Penske entry getting into the Corkscrew, drifting backward into the gravel earlier than coming to a cease at prime of the hill.
Colton Herta, Andretti Autosport w/ Curb-Agajanian Honda
Picture by: Jake Galstad / Motorsport Images
The session resumed after a five-minute break. The tempo was briefly set by VeeKay earlier than Lundgaard’s pace-setting lap.
With 13 minutes remaining, the #14 AJ Foyt Racing Chevrolet of Santino Ferrucci erupted with a plume of smoke and stopped in Flip 11 to carry one other purple flag.
The #30 Rahal Letterman Lanigan Racing Honda of Juri Vips was hit with a six-position beginning grid penalty by IndyCar officers on Saturday morning following an unapproved engine change after yesterday’s follow.