If your body can handle it, squats, bench and deadlift will serve (pun inteded) you well.
If not, look at this article;
It's a total myth that 'big muscles will slow you down' - especially when you consider that, as a tennis player you should be more concerned with trying to add as much muscle mass as possible to your legs - not your upper body so you look good at the beach.
Yes, having a huge man-boob-laden chest on top of spindly legs will hinder you on the tennis court, but having huge muscular legs and a lean upper body will only help your speed and mobility around the court.
Also place a big emphasis on hip mobility and posterior shoulder strength to limit injury.