I play tennis every day seriously and for my 1st division college. Have been playing for 10 years now. What Roger did is impossible. At that distance, and the size of the mark, there is no possible way he would be able to do that twice back to back. There is no way you could aim that accurately. As someone else has mentioned, if he was able to aim that well, he would be placing the ball on the line on all his serves. What is possible is placing the ball within a 6 inch radius every time, but not directly at the mark.