Figure Skating, Gymnastics, Competitive cheerleading are all difficult and athletic events, but are not sports. I think a criteria for a sport is that your destiny is in your hands. Granted, you might have a couple bad calls in baseball or football, but in those three, it's all judges. If a judge doesn't like you, you don't win. Look at the Canadian figure skater couple in the 02 winter games or the men's highbar competition in Athens. So that's why I put NASCAR as a sport.