Former Cubs, Red Sox pitcher Jon Lester announces retirement

Jon Lester retires: Five-time All-Star and three-time World Series champion calls it a career after 16 seasons

Nationals, Cardinals Swap Jon Lester For Lane Thomas - MLB Trade Rumors

Longtime Red Sox ace Jon Lester retires after 16 MLB seasons

Jon Lester, Cubs agree to a six-year, $155 million deal

Former Red Sox teammates Jon Lester and John Lackey put friendship on hold in MLB playoffs

Former Oakland A's pitcher Jon Lester retires

Jon Lester out of the equation for Cubs' Opening-Day starter - Chicago Sun-Times

Jon Lester will be the next Cubs player inducted into the Hall of Fame

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

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

Jon Lester's retirement reminds us Red Sox never should have let him go

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