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Former Red Sox great Jon Lester is calling it a career
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July 19, 2021: Jon Lester hits a high note, and a homer, as Nationals rout Marlins – Society for American Baseball Research
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Maybe the best playoff pitcher ever' - What made Jon Lester an October legend and potential Hall of Famer - ESPN
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RUN ITS COURSE': Ex-Red Sox, Cubs ace Jon Lester to retire
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MLB Rumors: Jon Lester has retired - Lone Star Ball
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Former Cardinal Jon Lester Retires
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Red Sox, Cubs pitcher Jon Lester retires after 16 years, 3 World Series titles
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Former Cubs, Red Sox pitcher Jon Lester announces retirement
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WCVB Channel 5 Boston - After 16 seasons in the MLB, former Boston Red Sox pitcher Jon Lester is calling it a career, according to a report: jon-lester-retiring-report-says
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Jon Lester announces retirement after 16 seasons, three World Series titles - ESPN
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Jon Lester hangs in there after rough first vs Orioles in Nationals Park - Federal Baseball
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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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Is Jon Lester a Hall of Famer? - Last Word On Baseball