SChristian Cyrus Leben[1] (born July 21, 1980) is an American mixed martial artist and referee. He competed in the UFC in the Middleweight division, compiling a record of 12-10 in 22 appearances for the organization. Leben first appeared in the inaugural season of The Ultimate Fighter reality series, and also fought in the now-defunct WEC. He began his UFC career with five victories in a row before suffering a knockout loss to future UFC Middleweight Champion Anderson Silva. Leben was the inaugural WEC Middleweight Champion.