1.) Stay on or inside the baseline. 2.) Hit on the rise, take time away from opponent. 3.) Pin point accuracy. 4.) Hit hard at the highest level possible, but make sure it's low enough to keep consistant. 5.) Hit huge to intimidate. 6.) Try to be patient. 7.) Recognize possible winner scenarios before you the pull trigger(depending on opponent) 8.) Keep on your toes and keep focused. 9.) Make the other guy have to beat you, don't give it to him. 10.) Slice serve and hard! on both sides. 11.) Hit flat and deep, but put enough top on it to keep it in court.(flat equals pace which can mean a subtraction of reaction time for the other guy) Feel free to add other keys.