Cardinals pitcher Jon Lester announces retirement

Jon Lester, a three-time World Champion, announces retirement

Jon Lester joins Cardinals

Jon Lester retires

Former Cubs pitcher Jon Lester, part of team's World Series core, announces his retirement - Chicago Sun-Times

Gregor: Lester, a standout Cubs starter for 6 seasons, calls it a career

Red Sox Beat: Lester cool and clutch in dominant Game 1 win

Former Cardinal Jon Lester Retires