In every tennis match you play, you not only have to play to your strengths, but you also need to figure out and take advantage of your opponent's weaknesses.  The best time to start figuring out just what your opponent's weaknesses are is not during the match, but before the match even starts, during the warm-up.  In this episode of Tennis Quick Tips, you'll learn what to look for during the warm-up so that you can quickly and easily evaluate your opponent.