Hasim Sharif Rahman is an American professional boxer. He is a two-time world heavyweight champion, having held the unified WBC, IBF, IBO and lineal titles in 2001; and the WBC title again from 2005 to 2006. He was ranked as a top 10 heavyweight by BoxRec from 2000 to 2007, and reached his highest ranking of world No.6 in 2000. World heavyweight champion (WBC and IBF) from April 22, 2001 to November 17, 2001. Wiki link