An MRI performed today revealed the Gronkowski suffered a ACL tear after a hit from Cleveland Brows Saftey T.J. Ward at Sunday's game.
His season is officially over and Gronkowski now faces another lengthy stay in rehab.
He missed this time past offseason and the first six games of the 2013 following back an forearm surgeries.
The Patriots will have to re-adjust after losing Gronk.
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