Math in the Olympics

I've been trying to find good examples of math in the Olympics, other than the obvious ones such as times and score averages. It might be the last day of the Olympics, but I finally found an interesting website!

Ties in Olympic Swimming:
It might be a bit confusing at first, but if you slow down and digest what the author is saying, it has some cool information you can learn. There were some cool facts about Olympic swimming that I didn't know about!
http://www.quickanddirtytips.com/education/math/why-are-there-ties-in-olympic-swimming

5 Fun Number Facts
Just how fast is Usain Bolt??
http://www.quickanddirtytips.com/education/math/5-numerical-fun-facts-about-the-olympics

Math Boot Camp
Your math basics for the Olympics
http://www.quickanddirtytips.com/education/math/olympic-math-boot-camp