Rob Gronkowski won't commit to return to play for Patriots in 2018
Patriots TE Rob Gronkowski announces retirement
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Patriots: Rob Gronkowski reacts to Tom Brady un-retirement rumors
Patriots tight end Rob Gronkowski announces retirement
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Rob Gronkowski: Patriots would welcome Tom Brady back with 'all open arms' if he wants to return
NFL rumors: Patriots' Tom Brady already recruiting Rob Gronkowski to come out of retirement?