This is a very nicely done video on explaining sport Judo. The video does a good job of explaining Judo scoring, something that can be confusing to the casual fan. There are other rules discussed too like if you grab both sides of your opponents gi, then you must attack immediately or be penalized. What is an Ippon you ask? One way to achieve an Ippon is by a throw that is decisive and forceful and the opponent lands on their back. There are 2 other ways to achive an Ippon also. Here are some great Ippons.
Enjoy the video!