Alex Mack retires: Seven-time Pro Bowl center ends career after 13 seasons with Browns, Falcons and 49ers
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2022 NFL Draft: 49ers likely to seek center with Alex Mack's decision unknown – NBC Sports Bay Area & California
Seven-time Pro-Bowl center Alex Mack officially announced his retirement after 13 seasons in the NFL.
Joe Thomas announces retirement from NFL, Cleveland Browns
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Alex Mack, former Falcons center, retiring after 13 NFL seasons
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Former Browns Pro Bowl C Alex Mack announces retirement
49ers center Alex Mack retires after 'sneaky great' NFL career - NBC Sports
49ers C Alex Mack Mulling Retirement