Rob Gronkowski on retiring from NFL at age 29: 'I didn't even want to negotiate' - ABC News
Rob Gronkowski Announces NFL Retirement for Second Time (UPDATE)
Rob Gronkowski announces his retirement from the NFL
Rob 'Gronk' Gronkowski announces retirement from Buccaneers, NFL on Instagram
Rob Gronkowski announces his second retirement from playing football
Agent: Gronkowski To Have Reunion With Brady In Tampa Bay
Rob Gronkowski retirement: How the future HOF tight end's decision to hang up his cleats affects the Buccaneers
New England Patriots tight end Rob Gronkowski announces retirement, New England Patriots
Detroit Lions nearly traded for Rob Gronkowski, but the Patriots TE threatened retirement - Pride Of Detroit
Former Patriots and Bucs star Rob Gronkowski says there's one coach who could get him to unretire. Who is it? - AS USA
Rob Gronkowski retiring from the NFL again
Gronk says he's healthy and fire burns to play with Brady
Patriots TE Rob Gronkowski announces retirement after nine seasons