Jon Lester retires: Five-time All-Star and three-time World Series champion calls it a career after 16 seasons
David Ross, Oldest Player in World Series, Ends Career in Climactic Game 7 - The New York Times
Where Ben Zobrist, other 2016 Cubs World Series heroes are now – NBC Sports Chicago
Former Cubs pitcher Jon Lester, part of team's World Series core, announces his retirement - Chicago Sun-Times
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Jon Lester retires
MLB veteran pitcher Jon Lester retires after 16 seasons
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Jon Lester retires
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