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49ers Center Alex Mack to Retire After 13 Seasons in the NFL - Sports Illustrated San Francisco 49ers News, Analysis and More
Former Browns Center Alex Mack Announces Retirement from NFL
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San Francisco 49ers center Alex Mack retiring after 13 NFL seasons
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Alex Mack, a three-time Pro-Bowl center with Browns, announces retirement
Former Cleveland Browns C Alex Mack announces retirement from NFL
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