Jon Lester, former Cubs, Red Sox pitcher, announces retirement

Jon Lester - Wikipedia

Former Cubs, Red Sox pitcher Jon Lester announces retirement

Jon Lester hits free agency after Cubs decline option; is a Boston Red Sox reunion possible?

Jon Lester announces his retirement after long career with Boston Red Sox and Chicago Cubs - Over the Monster

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

Ex-Red Sox Jon Lester Not Worried About Hall Of Fame Chances

Longtime Red Sox ace Jon Lester retires after 16 MLB seasons

Longtime Red Sox ace Jon Lester retires after 16 MLB seasons, Red Sox

Former Cardinal Jon Lester Retires

Jon Lester, Cubs keep World Series dream alive with Game 5 win – Boston Herald

Former All-Star pitcher Jon Lester announces retirement after 16 MLB seasons

Jon Lester Announces Retirement - MLB Trade Rumors