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

A. J. Pierzynski - Wikipedia

Maybe the best playoff pitcher ever': What made Jon Lester an October legend and potential Hall of Famer - ABC7 Chicago

Former Cubs pitcher Jon Lester retires after 16 seasons

Jon Lester retires

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

Former Cubs, Red Sox pitcher Jon Lester announces retirement

Jon Lester: Former Chicago Cubs, Boston Red Sox ace retires

Jon Lester retires

Former Cubs, Red Sox pitcher Jon Lester retires with 200 wins, 3 World Series rings - The Athletic

Bernie On The Cardinals: Yadier Molina and Jon Lester, Getting It Done As A Team Of Rivals - Scoops

Jon Lester Retires After 16 Seasons, Established Legendary Career Despite Hitting Just 4 Home Runs - Cubs Insider