30% of the time, when I hit a second serve, the player hits it with full power and it results in a double fault
The other question is how do you get a very very heavy topspin serve, I played against someone who had 25% skill(!!!!!!!) service and I simply could barely return his 110 km/h serves simply because they had too much topspin, spiraling 2 times into the air. Any other return except the safest and weakest return and the ball would go into the stands. How can you hit a serve like that and how can you hit a good return on a serve like this?
I"m sure he didn't have 100% topspin or things like that because he was also hitting flat groundstrokes...