In year two out of retirement, Rob Gronkowski ready to go “full speed” - Bucs Nation
Rob Gronkowski retires: Top on-field, off-field moments of the tight end's legendary NFL career
Bill O'Brien raves about Rob Gronkowski after retirement announcement - On3
Rob Gronkowski Announces Retirement - Faceoff Sports Network
Rob Gronkowski - Tight end announces his retirement - Fantasy Index
Former Wildcat Rob Gronkowski officially retires from NFL
Why Now: What Got Rob Gronkowski Out of Retirement
Tampa Bay Buccaneers TE Rob Gronkowski retiring from NFL for second time - ESPN
Buccaneers' Logan Ryan teases possible return of Rob Gronkowski out of retirement
Tampa Bay Buccaneers Tight End Rob Gronkowski Announces Retires, 11 NFL Seasons and 4 Super Bowls
Rob Gronkowski: Twitter reacts to Gronk's retirement