Today I played against a guy who has 125 mph serve. He is like 6 ft tall, so duh it is possible for him to achieve such a speed. It was very frustrating, but I was actually having fun returning it and was happy because I'd such a chance standing and returning the pro's speed. I want to ask is it possible for a guy who is 5'4-5'5 tall to achieve the 120mph serve?!?!