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Former Cubs pitcher Jon Lester retires after 16 seasons
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Ex-Red Sox Jon Lester Not Worried About Hall Of Fame Chances
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Former Oakland A's pitcher Jon Lester retires
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Jon Lester Retires After 16 Seasons, Established Legendary Career Despite Hitting Just 4 Home Runs - Cubs Insider
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Jon Lester - Wikipedia
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Former Cubs, Red Sox pitcher Jon Lester announces retirement
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Nationals, Cardinals Swap Jon Lester For Lane Thomas - MLB Trade Rumors
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Former Cubs, Red Sox pitcher Jon Lester announces retirement
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Jon Lester, Major League Baseball, News, Scores, Highlights, Stats, and Rumors
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Former Red Sox pitcher Jon Lester pops up at Fenway to catch up with some old friends - The Boston Globe