In order to get the best ranking, you need to play a game each day. Try playing at least one low tournament. When serving, aim either towards the corner or the middle line. That will move your opponent and give you a chance to return his shot in the other direction. Don't be afraid to get to the net and put the pressure on your opponent. It is a dangerous play, as he can lob you, but if you feel you have enough control, go for it. On the other hand, the right combination of drop shot and lob will draw your opponent to the net and then make the ball fly over him. Learn how the ball behaves on each surface. Grass will absorb some of the force and, consequently, the ball will bounce weaker than on, say, clay. There are foot marks on the court, telling you where to stand for the optimal efficiency. You can also replay a match you've just lost by leaving the game immediately and erasing the app from the phone's recent memory. When you get back in the game, you will be able to play the same match from the beginning. Some players have stated that Theron Tenniel is nearly unbeatable in the game. However, you just need some patience to learn his moves and improve your own skills. For example, he tends to get closer to you after serving, so use lob to trick him. Also, you can use slice to counter his serve and give yourself a bit more breathing space.