Originally Posted by directionals
I've been practicing to incorporate pronation into my flat serve for the past 3 months. It had been going pretty well until about a couple weeks ago. For the past 2 weeks, I haven't been able to keep the ball from going long. The success rate is probably now 1 in 4. I'm not sure what changed. What do you suggest I should do to keep the ball in the service box?
What was your first serve percentage prior to this recent problem with the flat serve?
If the adjustments mentioned in this thread do not fix your flat serve
I would take some off and go for more spin until first serve percentage is at least 75%...