WBO/IBF/WBA/IBO heavyweight champion Wladimir Klitschko was working hard during a training session at the Hotel Stanglwirt in Going, Austria. Klitschko is scheduled to defend his titles against the mandatory WBO challenger Alex Leapai of Australia at the Koenig-Pilsener-Arena on April 26 in Oberhausen, Germany. Leapai, a heavy underdog but a big puncher, secured his mandatory shot after last year’s upset decision over previously undefeated Denis Lebedev.