Patriots tight end Rob Gronkowski announces retirement
Rob Gronkowski on retiring from NFL at age 29: 'I didn't even want to negotiate' - Good Morning America
Rob Gronkowski Announces 2nd Retirement From NFL
Buccaneers' Gronkowski announces retirement from NFL for second time
Tom Brady Reacts to Teammate Rob Gronkowski Retiring: 'You Deserve It'
Rob Gronkowski announces his retirement from the NFL
NFL icon Rob Gronkowski opens up on working with Tom Brady again after retirement - Mirror Online
Rob Gronkowski retires again, but could make another comeback in 2022 or 2023, agent says (report)
Rob Gronkowski announces retirement from the NFL - Hernando Sun
Rob Gronkowski formally announces NFL retirement for second time - On3
3 teams Rob Gronkowski should join if he comes out of retirement