Jon Lester announces retirement from MLB after 16 seasons

MLB News: Jon Lester MLB: Pitcher announces retirement after 16 seasons and 3 World Series titles

Jon Lester remembered for World Series Game 5 with Cubs

Former Cubs, Red Sox pitcher Jon Lester announces retirement

Jon Lester Retires After 16 MLB Seasons; Won 3 World Series with Red Sox and Cubs, News, Scores, Highlights, Stats, and Rumors

Jon Lester's 200th career win, in context

Red Sox, Cubs pitcher Jon Lester retires after 16 years, 3 World Series titles

Longtime Red Sox ace Jon Lester retires after 16 MLB seasons

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

Top 5 moments from Lester's career

Jon Lester: News, Stats, Bio, & More - NBC Sports - NBC Sports