The Nevada State Athletic Commission on Wednesday revealed the post-fight drug test results for nine of the 18 fighters who competed on The Ultimate Fighter 10 Finale fight card which took place on Dec. 5 at The Pearl at the Palms Casino Resort in Las Vegas, NV.

All drug tests came back clean and included the following fighters: TUF 10 Finale main event fighters Roy Nelson and Brendan Schaub as well as Matt Hamill, Jon Jones, Kimbo Slice, Frankie Edgar, Matt Mitrione, John Howard and Mark Bocek.

The above mentioned TUF 10 finale competitors were randomly selected. However, athletic commissions typically test the main event fighters and fight night winners, as well as those who have failed tests in the past.

The tests screen for 'drugs of abuse' such as cocaine, marijuana and heroin, as well as anabolic steroids and other performance-enhancing drugs.

TUF 10 finale main event saw Roy Nelson become TUF season 10 winner and land the six-figure multi-year, multi-fight UFC contract, as he scored a first round knockout win over Brendan Schaub. Nelson also walked with extra $25,000, as he was awarded "Knockout of the Night" for his efforts.

In the co-main event, talented prospect Jon Jones was dealt his first career loss, as he suffered a disqualification loss against Matt Hamill. Jones was disqualified for landing numerous illegal "12-to-6" elbow strikes on his opponent.

Also featured on the main card, Kimbo Slice made a successful UFC debut, scoring a unanimous decision win over Houston Alexander in what was a special 215-pound attraction bout. Also, Frankie Edgar and Matt Veach earned "Fight of the Night" honors for their back-and-forth lightweight battle, which saw Edgar walk away with an exciting second-round submission win.

In addition, TUF 10 cast member Matt Mitrione earned a second-round KO win over fellow TUF 10 cast member Marcus Jones in the opening bout of the Spike TV televised card.

The Ultimate Fighter 10 Finale event drew an official attendance of 1,400 for a live gate of $504,350.