Former Cardinal Jon Lester Retires
Is Jon Lester a Hall of Famer? - Last Word On Baseball
Jon Lester announces retirement after 16 seasons, three World Series titles - ESPN
Jon Lester, two-time champion with Red Sox, announces retirement
Jon Lester just retired, and the KC Royals won't miss him
Longtime Red Sox ace Jon Lester retires after 16 MLB seasons, Red Sox
Three-Time World Series Champ Jon Lester Announces Retirement After 16 MLB Seasons - CBS Boston
Jon Lester
Jon Lester - Wikipedia