Jon Lester retires: Former Red Sox, Cubs ace concludes 16-year career - Sports Illustrated
Jon Lester's 200th career win, in context
Jon Lester announces retirement after 16 seasons, three World Series titles - ESPN
Former Cubs, Red Sox pitcher Jon Lester announces retirement
MLB - Jon Lester has announced his retirement after 200 wins, nearly 2,500 strikeouts, and 3 World Series titles.
Jon Lester Explains Decision To Retire After 16 MLB Seasons
Red Sox, Cubs pitcher Jon Lester retires after 16 years, 3 World Series titles
Jon Lester retires
Jon Lester Announces Retirement From MLB After 16 Seasons – OutKick
Jon Lester has announced his retirement - Bleed Cubbie Blue
Jon Lester Retires After 16 MLB Seasons; Won 3 World Series with Red Sox and Cubs, News, Scores, Highlights, Stats, and Rumors
Jon Lester announces retirement from MLB after 16 seasons
Jon Lester retires