Jon Lester retires after epic MLB career as Red Sox, Cubs ace - Sports Illustrated
Red Sox, Cubs pitcher Jon Lester retires after 16 years, 3 World Series titles
Lester sharp, Goldschmidt HR, Cardinals move up, beat Reds
Jon Lester beat the yips with focus and determination - Sports Illustrated
Jon Lester retires: Former Red Sox, Cubs ace concludes 16-year career - Sports Illustrated
With Jon Lester's retirement we ask: How do you define a Hall of Fame starting pitcher? - The Boston Globe
Ryan Dempster working for Cubs - ABC30 Fresno
Jon Lester - Wikipedia
Jon Lester retires
Lester out duels Sale in Red Sox win
Jon Lester announces retirement after 16 seasons, three World Series titles - ESPN
September 20, 2021: Jon Lester earns 200th and final career win – Society for American Baseball Research
Jon Lester talks about life after retirement from baseball