Rob 'Gronk' Gronkowski announces retirement from Buccaneers, NFL
Internet reacts to Rob Gronkowski's retirement announcement - ESPN
Rob Gronkowski on retiring from NFL at age 29: 'I didn't even want
Rob Gronkowski on retiring from NFL at age 29: 'I didn't even want to
Rob Gronkowski Announces He's Retiring, 'I Gave It Everything I Had'
Patriots trade Rob Gronkowski to Buccaneers for 4th-round pick
Four-time Super Bowl champion Rob Gronkowski announces retirement
Rob Gronkowski announces retirement from the NFL - Hernando Sun
Rob Gronkowski National Football League, News, Scores
Rob Gronkowski Reveals Reason for Retirement Decision
Rob Gronkowski and Tom Brady's Reunion Has Us Pumped for Football
Rob Gronkowski Makes Definitive Statement on NFL Future