 Unified world heavyweight champion Wladimir Klitschko was scheduled to face David Haye on 20 June 2009, but Haye pulled out within weeks of the fight complaining of a back injury.Chagaev agreed to step in for Haye as a last-minute replacement.The winner would take the vacant "Ring" magazine heavyweight title in the battle between their number 1 ranked heavyweight, Klitschko, and third ranked Chagaev.