Ikemefula Charles "Ike" Ibeabuchi defeated a boxer who is a two-time what?
Ike Ibeabuchi: Ikemefula Charles "Ike" Ibeabuchi (born February 2, 1973) is a Nigerian former professional boxer who competed from 1994 to 1999 in the heavyweight division. Ike Ibeabuchi:  He defeated highly ranked contender David Tua in 1997 and future world champion Chris Byrd in 1999. Chris Byrd: Christopher Cornelius "Chris" Byrd (born August 15, 1970) is an American former professional boxer who competed from 1993 to 2009. Chris Byrd:  He is a two-time world heavyweight champion, having first won the WBO title in 2000 after an upset corner stoppage over then-undefeated Vitali Klitschko.
world heavyweight champion