All nine fighters who were tested for banned substances following their “The Ultimate Fighter: 10 Finale” bouts came back clean.

The Ultimate Fighter 10 Finale took place Dec. 5 at The Pearl at the Palms Casino in Las Vegas, Nev. with the main event card airing on Spike TV.

Main event fighters, Roy Nelson and Brendan Schaub, were tested, as well as undercard fighters Matt Hamill, Jon Jones, Kevin “Kimbo Slice” Ferguson, Frankie Edgar, Matt Mitrione, John Howard and Mark Bocek.

All fighters were tested for drugs of abuse (such as marijuana and cocaine), as well as anabolic steroids and other performance-enhancers. The NSAC traditionally tests headliners and undercard winners, though the commission randomly selects a few other competitors at most events.