sentences:  He retired from MMA competition in 1998 after six fights.Jackson's success earned him a number of major awards, including the 1995 John Smith Award as National Freestyle Wrestler of the Year, 1992 Amateur Wrestling News Man of the Year and 1991 USA Wrestling and USOC Wrestler of the Year.Jackson is a member of the FILA International Wrestling Hall of Fame, the United States National Wrestling Hall of Fame (as a distinguished member) and the Iowa State University Athletics Hall of Fame.