Kings XI Punjab skipper Yuvraj Singh was in a relaxed mood after his side's victory over Delhi but that did not stop him from confessing that captaincy has brought the worst out of him as he gets angry easily when his side is not doing well.

"Well, actually it is getting worst out of me. I am getting very angry on the field, I don't know why," Yuvraj said after his side beat Delhi Daredevils by six wickets yesterday to keep their semi-final hopes alive.