Former Red Sox pitcher, World Series champion Jon Lester retiring, report says
Former Cubs pitcher Jon Lester, part of team's World Series core, announces his retirement - Chicago Sun-Times
October 28, 2007: Red Sox complete sweep of Rockies to win World Series – Society for American Baseball Research
Jon Lester, Major League Baseball, News, Scores, Highlights, Stats, and Rumors
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Former Red Sox ace Jon Lester, three-time World Series champ, retires after 16 seasons - The Boston Globe
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Rogers] 3-time World Series champion Jon Lester is retiring. : r/baseball
Jon Lester's 16-Year Career Perfectly Blended Intensity And Winning With Leadership
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Former Cubs, Red Sox pitcher Jon Lester retires with 200 wins, 3 World Series rings - The Athletic
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