After a 16-year career, pitcher Jon Lester told ESPN on Wednesday that he's decided to retire from baseball.
"It's kind of run its course," Lester, 38, told ESPN. "It's getting harder for me physically. The little things that come up throughout the year turned into bigger things that hinder your performance.

"I'd like to think I'm a halfway decent self-evaluator. I don't want someone else telling me I can't do this anymore. I want to be able to hand my jersey over and say, 'Thank you, it's been fun.