Jon Lester, former Cubs, Red Sox pitcher, announces retirement
Jon Lester announces retirement, St. Louis Cardinals lose potential pitching depth
Jackie Bradley Jr. enjoys baseball. But he won't talk about it once he's done. - The Boston Globe
Jon Lester retires: Former Red Sox, Cubs ace concludes 16-year career - Sports Illustrated
Red Sox, Cubs pitcher Jon Lester retires after 16 years, 3 World Series titles
Former Cubs pitcher Jon Lester retires after 16 seasons
MLB Rumors: Ex-Red Sox Pitcher Jon Lester Retiring After 16-Year Career
Curt Schilling - Wikipedia
Washington Nationals finally get Jon Lester on mound for 2021 debut - Federal Baseball
Jon Lester announces retirement after 16 seasons, three World Series titles - ESPN
MLB Players Most Likely to Retire After the 2021 Season, News, Scores, Highlights, Stats, and Rumors
Jon Lester, Major League Baseball, News, Scores, Highlights, Stats, and Rumors
Jon Lester retires
Former Cubs, Red Sox pitcher Jon Lester announces retirement National News - Bally Sports