Patriots' Rob Gronkowski announces his retirement following nine NFL seasons - Los Angeles Times
Rob Gronkowski retires from NFL after 11 years with Patriots, Bucs
Rob Gronkowski reveals why he was 'shocked' when Tom Brady announced his retirement
Rob Gronkowski announces retirement, can Tom Brady convince Gronk to return?, UNDISPUTED
New England Patriots tight end Rob Gronkowski announces retirement, New England Patriots
Rob Gronkowski Announces He's Retiring, 'I Gave It Everything I Had'
Tampa Bay Buccaneers Tight End Rob Gronkowski Announces Retires, 11 NFL Seasons and 4 Super Bowls
Rob Gronkowski on excluding Patriots in second retirement post
Rob Gronkowski announces retirement from NFL, Trending
Rob Gronkowski announces retirement from the NFL, again - Pats Pulpit
Rob Gronkowski wouldn't play football again even if Brady calls
Bill O'Brien raves about Rob Gronkowski after retirement announcement - On3
Rob Gronkowski on retiring from NFL at age 29: 'I didn't even want to negotiate' - Good Morning America
Rob Gronkowski announces second retirement from NFL
Rob Gronkowski formally announces NFL retirement for second time - On3