This is very odd. but I was watching few 3.5 players the other day. and most of them had really really bad form. Not bending knees, hitting with open stance with NO shoulder turn, moving like sea turtle on Ice, making Edberg's forehand look like beautiful art form. and so on and so on. and I played next day and I played like crap. Why is watching bad tennis form affect your tennis also ? and does it work opposite way also ?