Brock Lesnar was notified on Friday of a potential doping violation stemming from an out-of-competition drug test administered by USADA (United States Anti-Doping Agency) on June 28. Watch the latest UFC ON FOX content: http://foxs.pt/ZEONsH Connect with UFC ON FOX Online: Visit the UFC ON FOX WEBSITE: http://www.foxsports.com/ufc Like UFC ON FOX on FACEBOOK: https://www.facebook.com/UFCONFOX Follow UFC ON FOX on TWITTER: https://twitter.com/UFCONFOX About UFC ON FOX: The official FOX Sports home of UFC coverage. Every fight night we see every punch, kick and submission attempt and share it with you, THE FAN. Our talent includes past and current UFC Fighters, Kenny Florian, Brian Stann, and Daniel Cormier. UFC ON FOX content includes clips from UFC Tonight, UFC Ultimate Insider, The Ultimate Fighter and the best from the top athletes in MMA from Ronda Rousey, Anderson Silva, Cain Velasquez, Rashad Evans, Anthony Pettis, UFC President Dana White and more.