Rob Gronkowski Announces Retirement From The NFL – Hollywood Life
Gronk Retires, But His Agent Leaves an Opening - Sports Illustrated
Rob Gronkowski announces his second retirement from playing football
Tampa Bay Buccaneers Tight End Rob Gronkowski Announces Retires, 11 NFL Seasons and 4 Super Bowls
Rob Gronkowski Announces 2nd Retirement From NFL
Patriots tight end Rob Gronkowski announces retirement
Patriots tight end Rob Gronkowski announces retirement
Rob Gronkowski retirement: Patriots TE opens door for a return
Rob Gronkowski Retired. Again. - The New York Times
Rob Gronkowski retires as the greatest tight end of all time - Pats Pulpit
Rob Gronkowski Announces Retirement From The NFL – Hollywood Life
Rob Gronkowski he would retire if he had to decide today