Glad to hear you are interested in your performance. I've dealt with numerous tennis players (male or female), and the thing I've noticed that becomes more important, is lateral speed, and lateral explosiveness especially if you want to get that quick shot down the baseline. Lateral bounds are a great way to start off. Start by pushing yourself off your left foot towards the right. Land on your right, then push off your left foot again towards the right. Do this 10 times going right, then repeat going towards the left pushing off your right foot. The key is to get as much lateral distance as possible with each jump. After you feel you've mastered this, do a search on LATERAL PLYOMETRICS and you will be bound to find a lot of info. What I gave you is just a starting off point for lateral explosivness. let me know if you have any further questions, because I've got a lot more information, and articles I can send you.
Jamie Sylfest, CSCS