<page_title> Chris Leben </page_title> <section_title> Mixed martial arts record </section_title> <table> <cell> Loss <col_header> Res. </col_header> </cell> <cell> Mark Muñoz <col_header> Opponent </col_header> </cell> <cell> UFC 138 <col_header> Event </col_header> </cell> <cell> Leben tested positive for oxycodone and oxymorphone. <col_header> Notes </col_header> </cell> </table>
Leben tested positive for oxycodone and oxymorphone and lost to Muñoz at UFC 138.