49ers center Alex Mack retires after 'sneaky great' NFL career - NBC Sports
49ers' veteran C Alex Mack is retiring from the NFL after 13 seasons, per @realmikesilver. Mack, 36, is a 3x Second-team All Pro (2013…
Niners center Alex Mack retires after 13 seasons, seven Pro Bowls
Brandon Brooks, Alex Mack Make NFL Retirements Official, by SwaveSports
1,445 Alex Mack Photos & High Res Pictures - Getty Images
Alex Mack, Pro Bowl center, retires after 13 NFL seasons
Former Cleveland Browns C Alex Mack retires
Alex Mack retires from the NFL
Frank Gore signs 1-day contract Thursday to retire with 49ers; center Alex Mack announces retirement Friday, Ap
Center Alex Mack announces retirement after 13 NFL seasons - ESPN