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Former Cubs, Red Sox pitcher Jon Lester announces retirement
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Jon Lester retires after epic MLB career as Red Sox, Cubs ace
Jon Lester retires: Former Red Sox, Cubs ace concludes 16-year
Former Cubs, Red Sox pitcher Jon Lester announces retirement
Jon Lester retires
Reiter 50: Scherzer, Lester, Shields lead off-season's free-agent
Jon Lester announces retirement after 16 seasons, three World