The Patriots say Rob Gronkowski will not return to the game.
Gronkowski went to the locker room after he was blind-sided by Jaguars safety Barry Church on a downfield pass route. Church was called for unnecessary roughness on the play, and Gronkowski seemed woozy on his feet.
The team said he had a head injury and announced early in the fourth quarter that he would not return.
Gronkowski has only played 16 games in a season once in his career. He had season-ending back surgery last year and missed the final eight games of the regular-season and all of the Patriots' run to their fifth Super Bowl title.