Former Cal Star Alex Mack Signs 3-Year Deal With 49ers - Sports Illustrated Cal Bears News, Analysis and More
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49ers news: Alex Mack reworked deal has retirement overtones
49ers news: Alex Mack re-works his contract to free up $4 million in cap space as he mulls retirement - Niners Nation
San Francisco 49ers center Alex Mack retiring after 13 NFL seasons
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49ers C Alex Mack leaning towards retirement?