The Nevada State Athletic Commission recently informed MMAmania.com that all 12 of the fighters randomly tested for drugs on the UFC 81: "Breaking Point" fight card on February 2 from the Mandalay Bay Events Center in Las Vegas, Nevada, came back negative.
Here's the list:
- Timothy Sylvia
- Antonio Nogueira
- Brock Lesnar
- Frank Mir
- Nathan Marquardt
- Jeremy Horn
- Rob Emerson
- Tim Boetsch
- Tyson Griffin
- Marvin Eastman
- Ricardo Almeida
- Chris Lytle
Fighters are tested for banned substances such as performance-enhancing anabolic steroids, as well as recreational drugs like marijuana and cocaine.
There's no tried and true reason behind the selection process -- six fighters were not required to submit samples for testing. However, it's customary that state athletic commissions screen the marquee fighters at the very least.