Rob Gronkowski announces retirement from NFL for second time
Rob Gronkowski retires after 9 seasons with Patriots, 2 with Buccaneers - The Athletic
Rob Gronkowski retires after 11 seasons, 4 Super Bowl championships
Rob Gronkowski's Retirement, Training Camp Dates & More
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Why did Gronk retire? Timeline of NFL retirement, comeback - Sports Illustrated
Rob Gronkowski retires, won't join Tom Brady for 3rd season
Four-time Super Bowl champion Rob Gronkowski retires from NFL for second time, NFL
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Will Rob Gronkowski play in 2022? Here's latest update from his agent – NBC Sports Boston
Patriots tight end Rob Gronkowski announces his retirement on Instagram
Rob Gronkowski discussed Tom Brady reunion, Buccaneers return