Rob Gronkowski announces his retirement from the NFL
Rob Gronkowski Retires from NFL After 11-Year Career with Patriots
Rob Gronkowski timeline: How Tom Brady, Buccaneers lured Gronk out
Patriots Suffer Big Loss: Gronkowski Will Retire - The New York Times
Former Arizona Wildcat Rob Gronkowski retires from NFL for second
Reunited: Gronkowski, Brady teammates again
Rob Gronkowski announces retirement from the NFL again - Newport Buzz
Rob Gronkowski Announces He's Retiring, 'I Gave It Everything I Had'
NFL legend Rob Gronkowski told to reverse retirement and save Tom
Rob Gronkowski - 'Mindset wasn't there' despite teams' interest - ESPN
Tom Brady Has Perfect Response to Rob Gronkowski's Retirement
Does Rob Gronkowski deserve to be in the Hall of Fame? Examining