Originally Posted by Rickson
Not full sprint because 1) you have to be on your toes, and 2) you'll never recover if you go full sprint.
I pretty much agree with this. if your in a situation where you have to gun it with your legs, how good of a shot can you hit and if your opponent gets it back, how much does it take to stop and come back. Sprinting is uncontrolled speed. Tennis players need controlled speed.