Daniel Jeffery Henderson, (born August 24, 1970) is an American mixed martial artist and former Olympic wrestler, who competes as a middleweight and light heavyweight in the Ultimate Fighting Championship. He was the last Strikeforce Light Heavyweight Champion and was the last Welterweight 183 lb (83 kg; 13.1 st) and Middleweight 205 lb (93 kg; 14.6 st) champion of Pride Fighting Championships. He was the only mixed martial artist to concurrently hold two titles in two different weight classes in a major MMA promotion. Henderson is also the UFC 17 Middleweight Tournament Winner, the 1997 Brazil Open Lightweight Tournament Champion, the RINGS King of Kings 1999 Tournament Winner, and the 2005 PRIDE Welterweight Grand Prix Champion. He is known for having extremely devastating knockout power in his right hand and never being knocked out or stopped due to strikes in 37 professional fights over his 15 year career. As of December 2012, Henderson is ranked the #2 light heavyweight by Sherdog.