Jon Lester announces retirement after 16 seasons, three World Series titles - ESPN
Jon Lester: Former Chicago Cubs, Boston Red Sox ace retires
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Jon Lester retires after epic MLB career as Red Sox, Cubs ace
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Jon Lester announces retirement after 16 seasons, three World
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Jon Lester announces his retirement after long career with Boston
Jon Lester Announces Retirement - MLB Trade Rumors
Jon Lester announces retirement after 16 seasons, three World
Former Red Sox ace Jon Lester, three-time World Series champ
Longtime Red Sox ace Jon Lester retires after 16 MLB seasons
Tributes pour in after star pitcher Jon Lester retires
Former Cubs, Red Sox pitcher Jon Lester announces retirement