
Christian Cyrus Leben (born July 21, 1980) is an American mixed martial artist currently signed to the Ultimate Fighting Championship where he fights as a middleweight. He is known for his aggressive style, heavy hands, and iron jaw.
Leben first attained notoriety for his appearance on the inaugural season of The Ultimate Fighter reality series. He began his UFC career with five victories in a row before suffering a knockout loss to current champion Anderson Silva. He holds notable victories over Mike Swick, Jorge Rivera, Jorge Santiago, Patrick Côté, Alessio Sakara, Yoshihiro Akiyama, and Wanderlei Silva.
Description above from the Wikipedia article Chris Leben, licensed under CC-BY-SA, full list of contributors on Wikipedia.

UFC Ultimate Knockouts
2003 · as Himself

UFC 66: Liddell vs. Ortiz
2006 · as Self

UFC Fight Night 5: Leben vs. Silva
2006 · as Self

UFC 71: Liddell vs. Jackson
2007 · as Self

UFC 138: Leben vs. Muñoz
2011 · as Self

UFC 125: Resolution
2011 · as Self

UFC 162: Silva vs. Weidman
2013 · as Self

UFC 116: Lesnar vs. Carwin
2010 · as Self

The Ultimate Fighter 1 Finale
2005 · as Self

UFC 102: Couture vs. Nogueira
2009 · as Self

UFC 89: Bisping vs. Leben
2008 · as Self

UFC 82: Pride of a Champion
2008 · as Self

UFC Fight Night 2: Loiseau vs. Tanner
2005 · as Self

BKFC: KnuckleMania
2021 · as Self

UFC 168: Weidman vs. Silva 2
2013 · as Self

WEC 9: Cold Blooded
2004 · as Self

UFC 155: Dos Santos vs. Velasquez 2
2012 · as Self

UFC: Ultimate Comebacks
2008 · as Self