Patriots tight end Rob Gronkowski announces retirement
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Rob Gronkowski - Wikipedia
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New England Patriots tight end Rob Gronkowski announces retirement, New England Patriots
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Is Gronk The GOAT Tight End???
Tom Brady: Rob Gronkowski 'shocked' by former team-mate's retirement aged 45, saying he could still play until he is 50, NFL News
Tom Brady calls Rob Gronkowski the greatest tight end ever
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