Same injuries as I had when I played other sports: shoulder sprains, rotator cuff, pulled muscles, sprained knees and ankles, and a broken thumb. Very lucky to have no serious stuff. Seems like anytime you injure something, even with proper rehab, it becomes a weak link. And with age I'm accumulating a nice set of weak links. Still, I agree with the Argo "I'd rather go down doing something fun" theory.
"I didn't do it, and nobody saw me."