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Jon Lester - Wikipedia
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Steve Bartman, Leon Durham not only reasons Cubs have struggled in NLCS - Sports Illustrated
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Longtime Red Sox and Cubs ace Jon Lester announces retirement
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Jon Lester's retirement reminds us Red Sox never should have let him go
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Boston Red Sox - Wikipedia
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Jon Lester announces retirement after 16 seasons, three World Series titles - ESPN
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Jon Lester, Former Red Sox Ace and World Series Champ, Retires From MLB – NBC Chicago
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How Pitchers Fared After a No-Hitter - Sports Illustrated
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Jon Lester has announced his retirement - Bleed Cubbie Blue
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Blockbuster Trades in Baseball - Sports Illustrated
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Two cities, one legend: Jon Lester reflects on one of a kind career with Sox, Cubs, Sports
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Jon Lester beat the yips with focus and determination - Sports Illustrated