Reports: 49ers center Alex Mack retiring with Frank Gore; top pick Drake Jackson signing, Sports
Pro Bowl center Alex Mack to retire from NFL after 13 seasons: report
As 'golden retriever' Alex Mack turns 36, on-field energy continues to define longevity – KNBR
Silver]Seven-time Pro Bowl center Alex Mack is retiring after 13 seasons. The former Browns, Falcons and 49ers standout was one of the top linemen of his era. @BallySports @49ers : r/nfl
Pro Bowl center Alex Mack to retire from NFL after 13 seasons: report
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Cleveland Browns: Alex Mack reportedly plans to retire - Dawgs By Nature
Alex Mack - NFL News, Rumors, & Updates
Center Alex Mack announces retirement after 13 NFL seasons - ESPN
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