Four-time Super Bowl champion Rob Gronkowski retires from NFL for second time, NFL
Rob Gronkowski plays oversized role in Bucs' Super Bowl win - Los Angeles Times
Rob Gronkowski Announces Retirement From NFL, Again
Rob Gronkowski Reveals Surprising Coach Who Could Try To Get Him Out of Retirement
Rob Gronkowski retires, won't join Tom Brady for 3rd season in Tampa Bay
Patriots tight end Rob Gronkowski announces retirement
Rob Gronkowski announces his retirement from NFL for second time
Rob Gronkowski tells TMZ he'd retire from NFL if he had to decide right now
Rob Gronkowski says there is one NFL coach who can (maybe) get him out of retirement
3 teams Rob Gronkowski could come out of retirement to join