Seven-time Pro Bowl center Alex Mack is retiring after 13 seasons with three teams, multiple outlets reported Thursday.
The news came one day after reports that the 36-year-old veteran had agreed to restructure his contract with the San Francisco 49ers.
Mack started all 17 games in his first season with the 49ers in 2021 following seven years with the Cleveland Browns (2009-15) and five with the Atlanta Falcons (2016-20).
A first-round pick by Cleveland in 2009 and a member of the Hall of Fame’s All-Decade Team for the 2010s, Mack started all 196 of his NFL games. He missed 11 games in 2014 and two games in 2020.
Mack signed a three-year, $14.85 million contract with San Francisco in March 2021.