Originally Posted by dave333
^^^^(gorillas, bagumwalla posted same time) No, it has to be speed and spin.
So basically, you are saying they are wrong -- those writers who claimed that Don Budge and Ken Rosewall "hit a heavy ball."
Like Humpty Dumpty in _Alice in Wonderland_, you can use words to mean whatever you want them to mean. But in the 1970s a "heavy ball" was one which hit harder than you expected.