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Chicago Cubs land big-time free agent Jon Lester
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Jon Lester announces his retirement after long career with Boston Red Sox and Chicago Cubs - Over the Monster
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Red Sox trade Jon Lester to Oakland as Detroit take David Price from Rays, MLB
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Former Red Sox ace Jon Lester, three-time World Series champ, retires after 16 seasons - The Boston Globe
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Three Deals Help Red Sox Round Out Their Rotation - The New York Times
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Cubs' Jon Lester reminds Dodgers of what they don't have behind their ace – Orange County Register
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Jon Lester Looks Back on His Career - The Ringer
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Jon Lester's Top 5 Cubs' Moments
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Mastrodonato: Jon Lester retires a winner, but Red Sox still look like losers
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