Even if you've never watched horse racing before, you should watch the Breeders Cup Classic this Saturday and witness history.

Zenyatta, a 6-year-old mare, is undefeated in her 19 career starts and heading to her 20th. If she wins the Classic this year, it'll be for the second time and back-to-back. She'll end her career undefeated, with the longest win streak in horse racing history. She faces the best horses in world on Saturday, all of them boys.

It will be either breathtaking or heartbreaking.

http://www.cbsnews.com/video/watch/?id=7009219n&tag=contentMain%3BcontentBody