Rob Gronkowski says he'd choose to retire if forced into decision 'right now' : r/nfl
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Rob Gronkowski says he never considered holding out - The Boston Globe
NFL rumors: Retired Patriots tight end Rob Gronkowski's 'big announcement' is much ado about nothing
Star Patriots tight end Rob Gronkowski announces he is retiring - The Boston Globe
Rob Gronkowski retirement rumors: Patriots owner Robert Kraft holds out hope Gronk returns in 2019 [UPDATE] - DraftKings Network
Gronk says he's 'all in right now' after report that he'll consider retirement - The Boston Globe
Rob Gronkowski retirement tweet. : r/Patriots