I just played a match on a court that used a net sensor. I can't say i'm a fan. Sometimes it would 'beep' when there appeared to be no touch. If it did it must have been on a microscopic level: no affect on the serve what so ever. What are the pro's views on the sensors? I've seen some matches where a great serve on a key point (ace or unreturnable) was denied, even when no one heard a touch except Mr Sensor? Tennis doesn't need it...just let the umpire call what he see's and hears!