2. Keep the eye on the ball.
3. Foot-work and weight-control.
4. Strokes.
5. Court position.
6. Court generalship or match play.
7. Tennis psychology.
Tennis is a game of intimate personal relation. You constantly find yourself meeting some definite idea of your opponent. The personal equation is the basis of tennis success. A great player not only knows himself, in both strength and weakness, but he must study is opponent at all times. In order to be able to do this a player must not be hampered by a glaring weakness in the fundamentals of his own game, or he will be so occupied trying to hide it that he will have no time to worry his opponent. The fundamental weakness of Gerald Patterson's backhand stroke is so apparent that any player within his class dwarfs Patterson's style by continually pounding at it. The Patterson overhead and service are first class, yet both are rendered impotent, once a man has solved the method of returning low to the backhand, for Patterson seldom succeeds in taking the offensive again in that point.
I am trying to make clear the importance of such first principles as I will now explain.
CONCENTRATION
Tennis is played primarily with the mind. The most perfect racquet technique in the world will not suffice if the directing mind is wandering. There are many causes of a wandering mind in a tennis match. The chief one is lack of interest in the game. No one should play tennis with an idea of real success unless he cares sufficiently about the game to be willing to do the drudgery necessary in learning the game correctly. Give it up at once unless you are willing to work. Conditions of play or the noises in the gallery often confuse and bewilder experienced match-players playing under new surroundings. Complete concentration on the matter in hand is the only cure for a wandering mind, and the sooner the lesson is learned the more rapid the improvement of the player. An amusing example, to all but the player affected, occurred at the finals of the Delaware State Singles Championship at Wilmington. I was playing Joseph J. Armstrong. The Championship Court borders the No. 1 hole of the famous golf course. The score stood at one set all and 3-4 and 30-40, Armstrong serving. He served a fault and started a second delivery. Just as he commenced his swing, a loud and very lusty "Fore!" rang out from the links. Armstrong unconsciously looked away and served his delivery to the backstop and the game to me. The umpire refused to "let" call and the incident closed. Yet a wandering mind in that case meant the loss of a set.