Former Cubs, Red Sox pitcher Jon Lester announces retirement
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Jon Lester announces his retirement after long career with Boston
RUN ITS COURSE': Ex-Red Sox, Cubs ace Jon Lester to retire
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Former Cubs pitcher Jon Lester retires after 16 seasons
Washington National for a minute Jon Lester announces retirement
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Jon Lester announces retirement after 16 seasons, three World
Former St. Louis Cardinals pitcher Jon Lester decides to retire