As you can tell from my avatar, I not only play tennis, but I pretty much live and breath it!
I play adult leagues and tournaments, though I'm a pretty intermediate level. I work very hard though, and hope to improve to at *least* a 4.0 NTRP level if not higher. I mostly play singles, but I do play some doubles (I prefer singles though).
Much of my training I try to work around what I need for tennis. Though, since being stronger is never a bad thing, strength training is definitely a plus. My only other big training focus would be on plyometric moves, since I tend to lack speed (fast twitch). I've run for years, and have no problem with endurance, but lack that quick first step that is needed for good, solid footwork on the court.
Anyway, since tennis doesn't have its own subforum, I thought I'd start this thread and see if there were any other tennis players and/or fans on here.