Jon Lester announces retirement after 16 seasons, three World Series titles - ESPN

Ex-Red Sox, Cubs ace Jon Lester to retire

Former All-Star pitcher Jon Lester announces retirement after 16 MLB seasons

Jon Lester, former Boston Red Sox pitcher, retires after 16-year MLB career (report)

Jon Lester retires

Former Cubs, Red Sox pitcher Jon Lester announces retirement

Jon Lester retires after 16 seasons

2016 World Series - Wikipedia

Jon Lester retires: Five-time All-Star and three-time World Series champion calls it a career after 16 seasons

September 20, 2021: Jon Lester earns 200th and final career win – Society for American Baseball Research

Jon Lester, Major League Baseball, News, Scores, Highlights, Stats, and Rumors

Cardinals pitcher Jon Lester announces retirement

Jon Lester – Wikipedia