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Jon Lester - Wikipedia
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Jon Lester announces retirement after 16 seasons, three World
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The 25 Best MLB Pitchers Since 1990 to Never Win a Cy Young Award
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Cubs pitcher Jon Lester and his budding MLB Hall of Fame case
![Jon Lester Retires After 16 MLB Seasons; Won 3 World Series with Red Sox and Cubs, News, Scores, Highlights, Stats, and Rumors](https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/Chicago_Cubs_logo.svg/800px-Chicago_Cubs_logo.svg.png)
2017 Chicago Cubs season - Wikipedia
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Jon Lester Explains Decision To Retire After 16 MLB Seasons
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Former Cubs pitcher Jon Lester, part of team's World Series core
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Jon Lester retires: Five-time All-Star and three-time World Series
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Former Cubs, Red Sox pitcher Jon Lester retires with 200 wins, 3
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Jon Lester Major League Baseball, News, Scores, Highlights
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Jon Lester agrees to 6-year, $155M deal with Cubs - Newsday
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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
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Jon Lester retires