Jon Lester retires: Five-time All-Star and three-time World Series
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The Cubs have two All-Star pitchers. That's a fairly rare event
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Former Cubs pitcher Jon Lester retires after 16 seasons
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Former Cubs, Red Sox pitcher Jon Lester announces retirement
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Jon Lester retires: Former Red Sox, Cubs ace concludes 16-year
Red Sox, Cubs pitcher Jon Lester retires after 16 years, 3 World