Former Cubs pitcher Jon Lester retires after 16 seasons

Longtime Red Sox and Cubs ace Jon Lester announces retirement

Jon Lester discusses free-agent process and possibility of retirement after 2021 MLB season

WCVB Channel 5 Boston - After 16 seasons in the MLB, former Boston Red Sox pitcher Jon Lester is calling it a career, according to a report: jon-lester-retiring-report-says

Jon Lester Retires After 16 MLB Seasons; Won 3 World Series with Red Sox and Cubs, News, Scores, Highlights, Stats, and Rumors

Jon Lester retires

Former St. Louis Cardinals pitcher Jon Lester decides to retire

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

Jon Lester announces retirement after 16 seasons, three World Series titles - ESPN

RUN ITS COURSE': Ex-Red Sox, Cubs ace Jon Lester to retire

July 19, 2021: Jon Lester hits a high note, and a homer, as Nationals rout Marlins – Society for American Baseball Research

Jon Lester talks about life after retirement from baseball