In a recent interview, Fish revealed that he recently had heart surgery to repair what was called "faulty wiring", which caused him to have episodes of an extremely high heart rate, dating back to before the Davis cup tie in February. As it reoccurred, he eventually decided that he needed to get it fixed before returning to tennis. To quote Mardy "I thought I was going to die." He hopes to return by Wimbledon. I would link to the article, but I'm on my iPhone right now. Google it. Also, I'm aware that the title says "Mary". Thanks autocorrect.