Zu Anyanwu flagged for potential doping violation

UFC heavyweight Zu Anyanwu has been flagged by the USADA for a potential violation of its anti-doping policy arising from an out-of-competition sample collected Oct. 18, the promotion announced Friday.

As usual, the banned substance responsible for the flagging was not immediately disclosed.

Anyanwu competed on Dana White's "Tuesday Night Contender Series" this past summer before making his promotional debut on short notice against Justin Ledet at UFC Fight Night 116 in September. The 36-year-old's five-fight win streak was snapped by a split decision in his first walk to the Octagon.