Jon Lester retires after epic MLB career as Red Sox, Cubs ace - Sports Illustrated
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Jon Lester has announced his retirement - Bleed Cubbie Blue
Lester, Cubs ready in case Cleveland tries to run wild
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Whether it's goodbye or see you later, Jon Lester will always toast to Chicago - The Athletic
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Jon Lester is Struggling Mightily, But the Cubs' Options Are Limited - Bleacher Nation