MLB Rumors: Jon Lester has retired - Lone Star Ball
With Jon Lester's retirement we ask: How do you define a Hall of Fame starting pitcher? - The Boston Globe
With Jon Lester's retirement we ask: How do you define a Hall of Fame starting pitcher? - The Boston Globe
Jon Lester retires after epic MLB career as Red Sox, Cubs ace - Sports Illustrated
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Second-half season preview, playoff odds for all 30 MLB teams - ESPN
MLB Rumors: Jon Lester has retired - Lone Star Ball
Jon Lester Explains Decision To Retire After 16 MLB Seasons
Former Cubs, Red Sox pitcher Jon Lester retires with 200 wins, 3 World Series rings - The Athletic