Why is Nadal invincible on clay?

In Spain, players practice clay courts since childhood, which is a big advantage for Spanish players.

The two key factors of Nadal's dominance of red clay are super topspin and invincible running.

Tennis loses much more energy in the process of bouncing on red soil than in other courts, so the speed of the ball will become very slow, which gives players more time to run and hit the ball in situ. Nadal runs very fast and can slide on red clay, so even if the opponent's ball is tricky, he has a great chance to get in place. His super topspin is characterized by slow ball speed, high bounce and high over-the-net height. At the same time, due to aerodynamic reasons, the ball falls fast, it is not easy to get off the net and go out of bounds, and it can hit a very tricky angle and landing point. However, it is difficult to return the super topspin. Because of the high bounce, you should hit the ball over your shoulder. Coupled with strong rotation, it is difficult to control the ball and easy to make mistakes.