Nick Diaz failed a drug test he was required to take before fighting Takanori Gomi at Pride 33. The fight went on as scheduled because the drug test results are not ready until several days after the match up. He tested positive for marijuana.
Diaz took the drug test before the fight, as is required by the Nevada State Athletic Commission (NSAC). He then went on to beat Gomi, who is ranked the #1 lightweight Mixed Martial Arts (MMA) fighter in the world.
The fight result may be changed to a no contest, depending on the the outcome of a hearing. According to NSAC Executive Director Keith Kizer, Marijuana slows reflexes and deadens pain, which can endanger the fighter and create an unfair fight.