Gronkowski (undisclosed) went to the locker room during the third quarter of Sunday's road game against the Rams, Lindsay Jones of The Athletic reports.

EDGE Analysis

Gronkowski took a hard hit to his lower back from the Rams' Terrell Lewis after a catch and remained on the turf before making his way to the sideline tent. Per Albert Breer of SI.com, Gronkowski is undergoing X-rays to determine the nature and extent of the injury. Behind Gronkowski, the Buccaneers have O.J. Howard, Cameron Brate and Deon Yelder on the active roster.