Jon Lester retires after epic MLB career as Red Sox, Cubs ace - Sports Illustrated
Jon Lester announces retirement, St. Louis Cardinals lose potential pitching depth
Former Red Sox ace Jon Lester, three-time World Series champ, retires after 16 seasons - The Boston Globe
Jon Lester retires
MLB news: Jon Lester announces retirement after 16-year career
Red Sox, Cubs pitcher Jon Lester retires after 16 years, 3 World Series titles
Mastrodonato: Jon Lester retires a winner, but Red Sox still look like losers
Jon Lester announces his retirement after long career with Boston Red Sox and Chicago Cubs - Over the Monster
Three-Time World Series Champ Jon Lester Announces Retirement After 16 MLB Seasons - CBS Boston
Jon Lester on the Score fresh off retirement announcement
Former Cubs, Red Sox pitcher Jon Lester announces retirement
Jon Lester is Retiring - Bleacher Nation