The Tide was rolling early in Alabama's game against Arkansas Saturday, but it suddenly stopped.
Bryce Young suffered a sprained shoulder in the second quarter of Bama's 49-26 win over the Razorbacks.
He was evaluated in the medical tent and left for the locker room during the quarter, tossing his helmet in anger before entering.
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Young won the Heisman Trophy last year and is widely regarded as one of the top prospects for the next NFL Draft.
He was 7-for-13 for 173 yards passing with a touchdown and an interception when he left. Jalen Milroe replaced him.
Young did come out of the locker room with a helmet on and was questionable to return. He was throwing on the sideline before the second half started, but Milroe started the half under center, and Young never returned.
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Nick Saban told CBS he will find out more on Young's injury in the coming days.