John Lester's Yips: Is This Really a Thing?
Jon Lester Isn't the Cubs' Ace, But He Sure Pitched Like One Monday - Cubs Insider
Jon Lester beat the yips with focus and determination - Sports Illustrated
Baseball, Business, and the Yips
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Focus on a Target to Overcome The Yips
Dodgers pitcher Brandon McCarthy driven to succeed after battle with 'the yips' - Los Angeles Times
Jon Lester hadn't tried a pickoff throw since April 2013. Monday's attempt wasn't pretty. - The Washington Post
Jon Lester, Cubs keep World Series dream alive with Game 5 win – Boston Herald
Chicago Cubs: Jon Lester was worth every cent spent
The Yips: Chuck Knoblauch — A Foot In The Box
Players who had the yips
John Lester's Yips: Is This Really a Thing?
How Theo Epstein convinced Jon Lester to sign with the Cubs – Boston Herald
Jon Lester Can't Throw to First Base. So Why Aren't Opponents Running Wild? - WSJ
The Pitcher Who Can't Throw To First Base
Jon Lester - Wikipedia
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