Former Red Sox great Jon Lester is calling it a career
Jon Lester announces retirement, St. Louis Cardinals lose potential pitching depth
Former Cubs, Red Sox pitcher Jon Lester retires with 200 wins, 3 World Series rings - The Athletic
Reliving Red Sox Past: Jon Lester Deals As Boston Claims AL East
Two cities, one legend: Jon Lester reflects on one of a kind career with Sox, Cubs, Sports
Cubs' Jon Lester goes for 13th straight 30-start season - Chicago Sun-Times
Former Cardinal Jon Lester Retires
Jon Lester: Breaking News, Rumors & Highlights
Jon Lester Hall of Fame case discussion
Jon Lester announces retirement after 16 seasons, three World Series titles - ESPN