Jeffrey Ryan "Duke" Roufus (born February 19, 1970) is an American former kickboxer and head coach of the Roufusport based in Milwaukee, Wisconsin, United States. He is a well-known striking coach in North America. Career Duke Roufus started training in martial arts at an early age. He is the younger brother of kickboxer Rick "The Jet" Roufus. His professional kickboxing career saw him collect a number of titles. During the 1990s he won the W.K.A. North American Super Heavyweight Championship, W.A.K.O. World Super Heavyweight Championship, W.K.B.A. World Super Heavyweight Championship and the K.I.C.K. World Super Heavyweight Championship and the I.K.F. Pro Muay Thai Rules Super Heavyweight World Title on December 4, 1998 in Milwaukee Wisconsin, over Hiriwa TeRangi of New Zealand by unanimous decision 50-43 on all three judges' cards. On March 19, 1999, in Milwaukee, Wisconsin, in his only defense of his I.K.F. title, Roufus quickly defeated Australia's WKA World Champion Grant Barker with a combination of strikes which included a leg kick, 2 knees to Barker's head and finished with a high head kick. Roufus only took 39 seconds to knockout the Australian in the opening round of the scheduled 5 round Muay Thai bout. He opened Milwaukee Kickboxing & Fitness Club in June 1997. Roufus voluntarily vacated his Super Heavyweight I.K.F. Title to move down to the Heavyweight Muay Thai Division and soon after, retired. However, at the end of October 2000, Roufus announced he would come out of retirement to fight in the K-1 USA tournament. He lost his second round bout in the May 2001 K-1 USA tournament and his opening round bout in the August, 2001 K-1 USA tournament. On December 11, 2002, Roufus made his retirement official. His final kickboxing record was 36–8–1 and in pro boxing he was 2–0. On two further occasions Roufus has come out of retirement to fight in the ring to record wins against Sinisa "Thunderman" Andrijasevic on June 3, 2005 and Eduardo Maiorino on May 25, 2007. Following his retirement, he has become a well-known trainer, working with many mixed martial artists including former UFC Lightweight Champion Anthony Pettis, Alan Belcher, Pat Barry, Erik Koch, Ben Rothwell, Matt Mitrione, former U.S. Olympian and former Bellator World Champion Ben Askren and former UFC Welterweight Champion Tyron Woodley. Other former students include Kill Cliff FC coach Jason Strout, former UFC Lightweight Champion Jens Pulver, The Ultimate Fighter Season One