MLB Rumors: Jon Lester has retired - Lone Star Ball

Former Cubs, Red Sox pitcher Jon Lester announces retirement

Jon Lester, two-time champion with Red Sox, announces retirement

Jon Lester Looks Back on His Career - The Ringer

MLB 2017: Pitchers dominate top 20 baseball earners

A look back at Jon Lester's career - Beyond the Box Score

Is Jon Lester a Hall of Famer? - Bleed Cubbie Blue

Jon Lester's 16-Year Career Perfectly Blended Intensity And

Jon Lester Explains Decision To Retire After 16 MLB Seasons

Jon Lester, former Boston Red Sox pitcher, retires after 16-year

MORE