Jon Lester announces retirement after 16 seasons, three World Series titles - ESPN
Maybe the best playoff pitcher ever' - What made Jon Lester an October legend and potential Hall of Famer - ESPN
MLB News: Jon Lester MLB: Pitcher announces retirement after 16 seasons and 3 World Series titles
Jon Lester - Wikipedia
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Legendary pitcher Lester retires at 38
Longtime Red Sox and Cubs ace Jon Lester announces retirement
Jon Lester retires after epic MLB career as Red Sox, Cubs ace - Sports Illustrated
Former Cubs pitcher Jon Lester, part of team's World Series core, announces his retirement - Chicago Sun-Times
Jon Lester retires
Boston Red Sox 2013 World Series champs: Where are they now? John Farrell is a scout, Jonny Gomes is a hitting coach
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