First thing first, for all who are going to post in this thread, please obey the rules: 1. No trolling/flaming. 2. No sales or any kind of market promotion. 3. Focus on the tennis technique only please. For those who are not familiar with this subject, it was said, (written in the book, see picture), that the optimum contact point for a (topspin drive) groundstroke is to hit below the sweetspot. My question: 1. Which current pros (men or women), or retired pros, hit like this? (consistently). 2. Any up-coming juniors are being taught to hit this way?