Berlin, Germany - WBO super middleweight champion Robert Stieglitz (42-2, 23KOs), and challenger "King" Arthur Abraham (34-3, 27KOs), were in top form at the official weigh-in for Saturday's explosive clash at the O2 World Arena. Abraham, a former middleweight champion, will look to recapture the old magic that he once had at 160-pounds by attempting to become a two-division world champion.