Longtime Red Sox ace Jon Lester retires after 16 seasons
Jon Lester Announces Retirement - MLB Trade Rumors
Anthony Rizzo on Cubs' playoff chances: 'We can do this
Jon Lester retires: Five-time All-Star and three-time World Series champion calls it a career after 16 seasons
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Jon Lester's retirement reminds us Red Sox never should have let him go
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
Jon Lester announces retirement after 16 seasons, three World Series titles - ESPN
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How a retiring Mark Teixeira should inform the Red Sox' offseason plans - Over the Monster
Jon Lester Explains Decision To Retire After 16 MLB Seasons
Five-time All-Star Jon Lester retires after 16 seasons
Kevin Youkilis - Wikipedia
Jon Lester retires after epic MLB career as Red Sox, Cubs ace - Sports Illustrated
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Jon Lester retires after 16 seasons
Starting pitcher tiers: Industry insiders rank MLB's arms, from aces to 'guys' - The Athletic
Former Cubs, Red Sox pitcher Jon Lester announces retirement
