All six UFC 134 drug tests have come back clean from the Aug. 27 event in Rio de Janeiro, Brazil,including UFC middleweight champion Anderson Silva and fellow headliner Yushin Okami, UFC officials announced Thursday.
Four other fighters from the 12 bout card were randomly tested by the UFC, but their names were not disclosed.
Silva knocked out Okami in the second-round of the UFC 134 main event despite a shoulder injury that will sideline him until 2012. Other notable UFC 134 winners included former champions Mauricio “Shogun” Rua and Antonio Rodrigo Nogueira, who knocked out Forrest Griffin and Brendan Schaub respectively.
Pictured: Anderson Silva and Yushin Okami