Jon Lester retires: Former Red Sox, Cubs ace concludes 16-year career - Sports Illustrated
Jon Lester's 200th career win, in context
MLB pitcher battles cancer, never quits
Jon Lester on retirement, 01/14/2022
Ex-Cubs ace Jon Lester's influence on Justin Steele's strong start – NBC Sports Chicago
David Ortiz, Terry Francona react to Dustin Pedroia's retirement
With Jon Lester's retirement we ask: How do you define a Hall of Fame starting pitcher? - The Boston Globe
Former Cubs, Red Sox pitcher Jon Lester announces retirement
Former Red Sox ace Jon Lester, three-time World Series champ, retires after 16 seasons - The Boston Globe
Jackie Bradley Jr. enjoys baseball. But he won't talk about it once he's done. - The Boston Globe