Pro Bowl center Alex Mack to retire from NFL after 13 seasons
Frank Gore signs 1-day contract Thursday to retire with 49ers
7-Time Pro Bowl center announces retirement
7-time Pro Bowl C Alex Mack retires after 13 years in NFL
Pro Bowl center Alex Mack to retire from NFL after 13 seasons
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Former Falcons center Alex Mack announces retirement
My favorite player: Alex Mack - The Athletic
Former Cleveland Browns C Alex Mack retires
Alex Mack, a three-time Pro-Bowl center with Browns, announces