First Serve Percentage
What should I do when my first serve percentage drops down in a match?
Well, when you’re having a bad day serving or getting your first serve in, you shouldn’t force the issue. In other words, instead of trying to go for big or bigger serves try to spin the ball more. Put all that frustration you got from serving a low percentage into hitting the ball with way more spin and keeping it in.
Once you start getting those spin serves in, your mental-body behavior changes and then you go back and try your big flat serves. Your body is directed by commands from your brain, and when you get frustrated your body acts the same. Get your confidence back and your serve will be back as well.