Former Red Sox pitcher, World Series champion Jon Lester retiring, report says
Is Jon Lester a Hall of Famer? John Lackey has a strong take – NBC Sports Boston
MLB Rumors: Jon Lester has retired - Lone Star Ball
July 19, 2021: Jon Lester hits a high note, and a homer, as Nationals rout Marlins – Society for American Baseball Research
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Jon_Lester
Former Cubs, Red Sox pitcher Jon Lester announces retirement
Longtime Red Sox and Cubs ace Jon Lester announces retirement
Former Cubs, Red Sox pitcher Jon Lester announces retirement