Former Cardinal Jon Lester Retires
MLB News: Jon Lester announces retirement - Beyond the Box Score
Former Cubs pitcher Jon Lester retires after 16 seasons
Washington National for a minute Jon Lester announces retirement after 16-year career - Federal Baseball
Jon Lester retires: Five-time All-Star and three-time World Series champion calls it a career after 16 seasons
Ryan Dempster will not pitch in 2014, Red Sox starter may retire
Jon Lester, Major League Baseball, News, Scores, Highlights, Stats, and Rumors
Jon Lester Announces Retirement - MLB Trade Rumors
Jon Lester out of the equation for Cubs' Opening-Day starter - Chicago Sun-Times
Former Cubs, Red Sox pitcher Jon Lester announces retirement
Jon Lester announces retirement after finishing career with Cardinals Midwest News - Bally Sports
Jon Lester joins Cardinals
Jon Lester announces his retirement after long career with Boston Red Sox and Chicago Cubs - Over the Monster