Carr, the top scorer in the Big Ten behind Bates-Diop , paced Penn State with 28 points and was 4 for 5 from beyond the arc.
Bates-Diop, who had been battling the flu and was questionable for the game, led Ohio State (18-5, 9-1) with 25 points but was in foul trouble for much of the second half.
The 7-foot-1 Ayton, expected to be at or near the top of the NBA draft this year, was 12 of 12 at the foul line as the Buffaloes tried to get physical with the big rookie, without much success.
Corey Kispert added a season-high 23 points and 10 rebounds for the Bulldogs, who won their 20th straight conference road game.
Utah (13-7, 5-4 Pac-12) led 79-77 late in overtime and had a chance to stretch it, but David Collette missed two free throws with 20.9 seconds left.
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