Oleg Alexandrovich Maskaev is a Kazakhstan-born Russian and American former professional boxer, who competed from 1995 to 2013, and held the WBC heavyweight title from 2006 to 2008. Throughout his career, he represented the Soviet Union, Uzbekistan, the United States, and Russia. World heavyweight champion (WBC) from December 9, 2006 to March 8, 2008. Wiki link