Report: Alex Mack opts out of his Cleveland Browns contract
Browns C Alex Mack is Back, But Refuses to Yak about Contract - Dawgs By Nature
REPORTS: Alex Mack Could Leave the Browns for Atlanta — 93.1 WZAK
Browns center Alex Mack deserves his payday and right not to negotiate contract during season - Dawgs By Nature
Alex Mack, Joe Thomas Named To NFL's All-Decade Team For 2010's
Alex Mack Opts Out Of Contract
2016 NFL free agency: Alex Mack to opt out of contract with Browns - Big Cat Country
Browns' Alex Mack Opts Out Of Contract - Steelers Depot
49ers eager to see what center Alex Mack has left at 35
Alex Mack: Cleveland Browns going in right direction