I got an issue as of late. During my last two matches I have been fighting my own body. I think you can compare it best to what happened to Coria during the 2004 Roland Garros final. I'm out of breath very fast, my legs are extremely heavy and cramps can shoot up any second. It's not because I'm not fit or not drinking enough fluid. It's clearly something psychological, but it's hurting me physically. I don't really know what to do about it. It's has costed me two close matches now. Last sunday for example it happened during a singles match. During the doubles match after that I got better. I wasn't out of breath, my legs were much lighter and I didn't cramp at all. No surprise I played much better, but during the singles match it was a nightmare. I'm lost what is wrong. If you asked me if I'm nervous or stressed I would say no, but I can't deny something is wrong. I'm just puzzled about how I can solve it. I will definitely try to warm up very well for next match (next sunday). I have tried to focus on my breathing in order to relax, but not with much success. My body just shuts down on me. Just like Coria during Roland Garros. I have watched that final numerous times (I'm a big Gaudio fan) and you can clearly see that during the third set his face turns red and he's gasping for air. After which cramps came up. I feel the same. Any tips or comments would be much appreciated.