1. Improving your groundstroke can greatly enhance your overall performance. Practice your groundstroke with a partner at least twice a week. Take lessons from a tennis pro at least once a month if possible.
2. Work to maintain your focus during a match. Instead of chastising yourself for making a bad shot, concentrate on what you must do to defeat your opponent.
3. Improve your fitness level. Losing a few extra pounds can make a huge difference in your stamina and lead to better performance.
4. Develop your serving technique. Serving is one aspect of your game you can work on alone as well as with a partner. Attempt to get to the point where you can serve effectively without having to think about your technique.
Written by Jim Clooney