Boxing matches still draw massive crowds to Las Vegas and other venues around the globe, and Las Vegas is still seen by many fans as a heavyweight in the fighting world
With his loose curls and surfer's build, it's no wonder Urijah Faber is nicknamed the "California kid." But inside the ring, Urijah is anything but laid-back and smiling.
Author Matthew Polly has spent two years traversing the globe learning mixed martial arts from the best trainers. As he spoke with trainers and fighters he learned how the sport evolved from "human cockfighting" to one of the fastest growing sports in the world.
When Forrest Griffin tweeted a joke about rape, he set off a firestorm of anger among women and mothers. They see the MMA as very unsuitable role model for children and have spoken out about it.
The ghost sport is how Paul Beston describes boxing. Once the most prestigious professional sport in the United States, it has now fallen on hard times.