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Ohio State Buckeyes star running back J.K. Dobbins exited Saturday’s Fiesta Bowl and immediately limped into the locker room after potentially aggravating his ankle injury.

On Ohio State’s first offensive series of the second half, Dobbins rolled out of the backfield before immediately experiencing discomfort in his ankle. He hobbled on the field then immediately called over for the training staff.

Dobbins ripped off two huge runs in the first half, including a 68-yard touchdown, but came out for the second half with tape on his ankle. The Buckeyes seemed hopeful that he could play through the injury, but that optimism vanished after the first play.

Losing Dobbins for any length of time would be a massive blow for Ohio State. He passed Eddie George’s mark for the single-season rushing record and had 142 rushing yards on nine carries before exiting.