Rob Gronkowski announces his retirement from the NFL
Rob Gronkowski Announces He's Retiring, 'I Gave It Everything I Had'
Rob Gronkowski reveals when he started to think about retiring
Former Patriots TE Rob Gronkowski announces retirement for 2nd
Rob Gronkowski Retiring From Tampa Bay Bucs, NFL For 2nd Time
Rob Gronkowski retires again, but could make another comeback in
Rob Gronkowski retires for second time following decorated 11-year
Rob Gronkowski threatened to retire after he almost got traded to
Rob Gronkowski he would retire if he had to decide today
Rob Gronkowski Is Retired. We've Got a Few Ideas For Him.
Four-time Super Bowl champion Rob Gronkowski announces retirement
Rob Gronkowski shares why he went into brief retirement