Red Sox, Cubs pitcher Jon Lester retires after 16 years, 3 World Series titles
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Jon Lester talks about life after retirement from baseball
Former Cubs pitcher Jon Lester, part of team's World Series core, announces his retirement - Chicago Sun-Times
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Former Cubs, Red Sox pitcher Jon Lester retires with 200 wins, 3 World Series rings - The Athletic
Jon Lester talks about life after retirement from baseball
Jon Lester retires after epic MLB career as Red Sox, Cubs ace - Sports Illustrated