Is it reconmended to "move your arms up together" when you serve? Agassi's service motion is a clear example to moving both tossing arm and racquet arm up together. However, I find it very difficult to toss the ball correctly when moving my racquet arm up, so I keep it down until I toss the ball. On the other hand, Sampras keeps this racquet arm down longer than anyone I've seen, the ball is completely toss before he even move his racquet arm. So I guess this leads me to my second question; is there any right or wrong way to do this, or its whatever that feels most comfortable to me?