Most of you readers are way too young to remember Zorro. Zorro was a Mexican cowboy hero famous for his sword and the Z he slashed into things so people and villains would remember him. If he played racquetball the Z serve would be his favorite!!
This serve destroys players’ timing. Most tournament players have a z serve. How many have five or more Z serves? You need to have more than one z serve. Without giving away the formula for coke, here is one tip.
Hit your normal z serve. Now hit the same serve but snap your wrist hard. The ball should hit the side wall and jump off at 45 degrees. Hit the serve again and just roll it off your racquet. The ball will roll off the side wall and since it is hit at a much slower speed it will throw the receiver off.
I teach five different Z serves and then add variations to those which actually gives the server 15 different z serves. To the fan in the stands it may look like the same z serve but to the receiver, it sure does not! All you have to do is throw them off by a little and you have a setup or a serve return error!