So, my mate Dave's mate David (Papineau) has started a blog about philosophy and sport. He's written some papers recently on topics related to sport, including In the Zone (link to PDF), and Choking and the Yips (link to .Docx). The opening salvo of the blog is also about choking and the yips. You can find the blog here: More Important Than That.
(The name of the blog is evidently a reference to this remark by Bill Shankly: "Some people believe football is a matter of life and death, I am very disappointed with that attitude. I can assure you it is much, much more important than that".)