Nearly the entire UFC 137: Penn vs. Diaz fight card was tested for drugs of abuse and performance enhancing substances.
Of the 22 fighters in competition at the Mandalay Bay Events Center in Las Vegas on Oct. 29, the following 17 were drug tested: B.J. Penn, Nick Diaz, Cheick Kongo, Roy Nelson, Scott Jorgensen, Hatsu Hioki, Donald Cerrone, Eliot Marshall, Brandon Vera, Chris Cammozzi, Francis Carmont, Ramsey Nijem, Danny Downes, Bart Palaszewski, Tyson Griffin, Dustin Jacoby, and Clifford Starks.
All 17 tested fighters passed without incident, according to the Nevada State Athletic Commission, the agency which regulates mixed martial arts events in Nevada.
© 2011 MMA Weekly All Rights Reserved.