An interesting heavyweight division fight has been added to the World Series Of Fighting IV as Ray Sefo faces Dave Huckaba. Sefo will not only be making his WSOF debut, but he is the reigning president of the World Series Of Fighting. Huckaba will enter the fight riding a three fight winning streak, which includes a victory over Strikeforce veteran Carl Seumanutafa. World Series Of Fighting IV takes place on August 10th from the Citizens Business Bank Arena in Ontario, California with no headliner announced as of yet.