Four-time Super Bowl champion Rob Gronkowski announces retirement after 11 seasons with Patriots, Buccaneers
Rob Gronkowski appreciates teams trying to lure him back to NFL but 'mindset is just not there'
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Rob Gronkowski Announces Retirement From The NFL – Hollywood Life
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Rob Gronkowski to 'take some time' to mull NFL future, reveals 2 things he still wants to accomplish
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Rob Gronkowski announces retirement
Report: Stephen Anderson signs with Patriots practice squad
Rob Gronkowski fulfills goal on football field in retirement