UFC 153 fighters Stephan Bonnar and Dave Herman each tested positive for banned substances in their post-fight drug screens.
MMAjunkie.com today confirmed with Ultimate Fighting
Championship officials that all 24 fighters who competed at this past
month's UFC 153 event in Brazil were tested, and Bonnar and Herman were
the lone two competitors who failed the screen.
Bonnar tested positive for Drostanolone, an anabolic steroid, while Herman's screen was flagged for marijuana metabolites.