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September 20, 2021: Jon Lester earns 200th and final career win – Society for American Baseball Research
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Jon Lester retires after epic MLB career as Red Sox, Cubs ace - Sports Illustrated
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Jon Lester: News, Stats, Bio, & More - NBC Sports - NBC Sports
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Jon Lester, former Cubs, Red Sox pitcher, announces retirement
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Column: Why Chicago Cubs should retire Jon Lester's number
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Interview with Jon Lester on his FIRST DAY after Retirement
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Jon Lester: Breaking News, Rumors & Highlights
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Jon Lester Announces Retirement - MLB Trade Rumors
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Jon Lester Announces Retirement From MLB After 16 Seasons – OutKick