No word on how long GRONK will be out, but this is a huge blow to Patriots Super Bowl chances. They are a different team when GRONK is on the field.
Bad news for Gronk: Back injury ended up being worse than originally believed. He will have surgery tomorrow, per source.
— ProFootballTalk (@ProFootballTalk) December 1, 2016
#Patriots TE Rob Gronkowski will have back surgery (as @viccarucci mentioned). Injury is worse than anticipated. It’s happening tomorrow.
— Ian Rapoport (@RapSheet) December 1, 2016
The initial thought is he will be out 8 weeks, but no one really knows at this point, since a back issue is a tricky thing.
More on Gronk from #NFL sources: Suffered a ruptured disk vs. #Seahawks, surgery in L.A. Expected to be out eight weeks.
— Vic Carucci (@viccarucci) December 1, 2016