UFC heavyweight fighter Junior dos Santos has reportedly been pulled from the upcoming UFC 215 event due to a possible doping violation. The U.S. Anti-Doping Agency informed dos Santos that a sample that was taken on August 10 tested positive for a banned substance.

The former UFC Heavyweight Champion, who currently holds a professional record of 18-5, was scheduled to fight Francis Ngannou (10-1) on September 9 in Edmonton, Alberta, Canada's Rogers Place.