I voted for Poker because it requires absolutely zero physical prowess to master. And at least in billiards one has to move his limbs in a skillful way. So based on the criteria doc gave, the least sporting is Poker. Having said that, I consider none of those things listed to be sport. The common definitions of sport and game have been convoluted IMO. The choices are all games IMO with the exception of horse racing which is simply a show or form of entertainment. If horse racing is considered a sport than logic leads one to the conclusion that any and all animals racing is a sport. Racing in general, with the exception of a foot race between humans, is not sport. It's a skilled game. Golf is a game. If you can be an alcoholic fat man and master it, it's a game. Sport to me, is a true test of a man. Driving fast, finding the best line to turn left, and being able to do it for hours is not sport. It's a skill to be sure but so is eating hot dogs or writing nicely or skating gracefully.