Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
I also use sportacular, but I will try out the other one's mentioned here.

I am a fan of most sports, but to say that american football is weak because they wear pads, watch this sport science. Getting hit by a guy equaling the force of a 35mph car crash would require some padding and most would get a concussion with or without a helmet...with might be your better option here.

http://www.youtube.com/watch?v=W7tGY-VDx3o
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.