Balls should be good for at least six sets, and for more for the average player. But if the rallies are long, they do not last as long as this. There is a fuzz on the surface that wears off on the hard court. Helen Wills Moody
My aggression out there is my weapon. I think it's more letting them know that I'm not going to let them get away with something, and I'm not just going to kind of poke it back and be content to stay in rallies. Andy Roddick