
UFC 116 took place on July 3 at the MGM Grand Garden Arena in Las Vegas, with Brock Lesnar defeating Shane Carwin via second-round submission in the main event. With the win, Lesnar retained the UFC heavyweight championship..
Lesnar and Carwin were among those tested and the results came back clean. The NSAC has traditionally tested both main event fighters, though all fighters are subject to random testing.
Also tested and cleared were co-main event participants Chris Leben and Yoshihiro Akiyama along with Chris Lytle, Matt Brown, Krzyzstof Soszynski, Stephan Bonnar, Brendan Schaub, George Sotiropoulos, Kendall Grove, Ricardo Romero, Jon Madsen, Gerald Harris and Daniel Roberts.
Not tested were Kurt Pellegrino, Chris Tuchscherer, Seth Petruzelli, Goran Reljic, Dave Branch, Forrest Petz and Karlos Vemola. In all, 15 fighters were tested while seven were not.
No UFC fighter has failed a drug test since Karo Parisyan tested positive for three banned substances at UFC 94 in Jan. 2009.