Jon Lester retires after epic MLB career as Red Sox, Cubs ace

Cancer survivors and contenders, Anthony Rizzo and Jon Lester's bond goes deeper than the Cubs - ESPN

Jon Lester retires after epic MLB career as Red Sox, Cubs ace - Sports Illustrated

A look back at Jon Lester's career - Beyond the Box Score

Jon Lester's departure still stings, but he leaves baseball an icon twice over

Former Cubs Ace Jon Lester Wins 200th Career Game - On Tap Sports Net

Cubs' Jon Lester goes for 13th straight 30-start season - Chicago Sun-Times

It's quite amazing how Jon Lester pitches in Game 4 of the 2007 World Series after undergoing chemotherapy less than a year prior. : r/redsox

With Jon Lester signing, Cubs shake up the baseball world – Hartford Courant

Jon Lester: Cubs veteran has no hard feelings towards Red Sox

Reliving Red Sox Past: Jon Lester Deals As Boston Claims AL East