Gronkowski didn't make the trip with the New England Patriots to Buffalo, NFL Media's Albert Breer reported Saturday, per a source. The Pats later officially downgraded Gronkowski to out for Sunday's game against the Bills.
Gronk underwent back and forearm surgeries this offseason. The tight end practiced on a limited basis this week, but was officially listed as doubtful prior to the game. Saturday's news confirms he won't play.
The Gronk-watch moves into Week 2.