I played baseball from the age of 8, and then softball after high school until I was 26, but missed the entire season about half the time with my legs messed up. As my legs deteriorated, I went from CF, to RF, to 3B, to "Hey, can somebody give me a hand here?" After I moved down to FL, I noted the level of play down here, well, stunk. So, at 35 I started playing again for a few more years until my legs crashed again. Now I'm down to a day a year at the FAU Homerun Derby. I even did that in a cast for the 2005 derby - my one day a year to be young again - and there was no way I was going to miss it. I fell over a couple times, but always got back up.
Now I'm pretty much just playing golf - badly. My best friend served 3 tours in Vietnam as a Navy Seal, and used to say that nothing in his life ever frightened him as much as me holding a 6-iron. Satan lives in my 6-iron.
I go snorkeling fairly often, but I'm not sure that qualifies as a sport.