Sultan Ibragimov vs. Evander Holyfield, was a professional boxing match contested on 13 October 2007 for the WBO heavyweight championship.

Right after beating Briggs, Ibragimov told me that he wanted to face a world champion in his next fight, in the end we contacted members of Ruslan Chagaev's team and agreed on everything", said the president of Seminole Warriors Boxing promotion company Leon Margules during the first pre-fight press-conference, "Both Sultan and Ruslan are true fighters.

The fight began tentatively, with Ibragimov mostly staying at range and avoiding exchanges, keeping Holyfield at bay with fast combinations.

Ultimately, the fight went full twelve rounds, with Ibragimov being declared the winner by unanimous decision, successfully defending his WBO world heavyweight title.

[11][12][13] Ibragimov would agree to face IBF champion Wladimir Klitschko in the first heavyweight unification bout since 1999, losing his title in a unanimous decision before retiring.