Alex Mack, a three-time Pro-Bowl center with Browns, announces retirement
Time to Get Serious: C Alex Mack Met With Jaguars, No Offer Sheet Yet - Dawgs By Nature
49ers Pro Bowl C Alex Mack retires after 13 seasons
NFL veteran center Alex Mack retires after 13 seasons, per report
NFL roundup: Latest league news from Thursday, June 2
San Marcos Alum Alex Mack Retires After Sterling 13-Year NFL Career, Sports
Brandon Brooks, Alex Mack Make NFL Retirements Official - Sports Illustrated
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Center Alex Mack Announces His Retirement After 13 NFL Seasons - Sports Illustrated Cal Bears News, Analysis and More
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7-time Pro Bowl C Alex Mack retires after 13 years in NFL, Sports
Ex-Falcons center Alex Mack retiring after 13 seasons