MLB Rumors: Jon Lester has retired - Lone Star Ball
Jon_Lester
Washington National for a minute Jon Lester announces retirement after 16-year career - Federal Baseball
Jon Lester, Cubs agree to a six-year, $155 million deal
Jon Lester retires after epic MLB career as Red Sox, Cubs ace - Sports Illustrated
Former St. Louis Cardinals pitcher Jon Lester decides to retire
Cubs-Indians: Jon Lester showing he has a lot left in the tank - Chicago Sun-Times
MLB veteran pitcher Jon Lester retires after 16 seasons
Jon Lester: Cubs veteran has no hard feelings towards Red Sox
Bernie: As Jon Lester Retires, An Appreciation Of A Former Rival And His Brief But Special Time As A Cardinal. - Scoops
Former Cubs, Red Sox pitcher Jon Lester announces retirement after 16 seasons
Former Red Sox teammates Jon Lester and John Lackey put friendship on hold in MLB playoffs
Jon Lester Retires After 16 Seasons, Established Legendary Career Despite Hitting Just 4 Home Runs - Cubs Insider
Jon Lester, Cubs keep World Series dream alive with Game 5 win – Boston Herald
Jon Lester, done after 16 seasons, gave the Red Sox everything he had — something today's starters aren't asked to do - The Boston Globe