Patriots tight end Rob Gronkowski noncommittal on returning in 2018 - Pats Pulpit
Rob Gronkowski announces his retirement from NFL for second time
Why Now: What Got Rob Gronkowski Out of Retirement
Why Now: What Got Rob Gronkowski Out of Retirement
Rob Gronkowski retirement: How the future HOF tight end's decision to hang up his cleats affects the Buccaneers
Rob Gronkowski retires as the owner of 15 NFL records - Pats Pulpit
Former Patriots TE Rob Gronkowski announces retirement for 2nd time
Rob Gronkowski on retiring from NFL at age 29: 'I didn't even want to negotiate' - ABC News
Patriots tight end Rob Gronkowski announces his retirement on Instagram