49ers Pro Bowl C Alex Mack retires after 13 seasons
San Francisco 49ers sign Pro Bowl center Alex Mack to 3-year deal - ABC7 San Francisco
Cleveland Browns Free Agent Review: C Alex Mack - Dawgs By Nature
Alex Mack: Falcons offense hinges on All-Pro center - Sports Illustrated
Alex Mack: 'It's Always Fun to Win'
Browns To Match Jaguars' Offer For Alex Mack
7-time Pro Bowl C Alex Mack retires after 13 years in NFL
Former Falcons center Alex Mack signs 3-year deal with the 49ers
Cleveland Browns match offer sheet to retain Alex Mack
Niners center Alex Mack retires after 13 seasons, seven Pro Bowls
Golden Nuggets: Alex Mack gives the 49ers peace of mind at center - Niners Nation