VITALI Klitschko was given a scare before retaining his WBC world heavyweight title with a unanimous points victory over Dereck Chisora. British challenger Chisora became only the fourth fighter to take the elder Klitschko the distance, however ‘Del-boy’ fell short on the scorecards, which read 118-110 118-110 119-111 in the champion’s favour.Despite the defeat, Chisora can be proud of his efforts, and emerged from the contest with plenty of credit, for his antics inside the ring, at least.The 28-year-old Londoner caught Klitschko with a number of powerful body shots and the 40-year-old Ukrainian was well below-par during his latest defence.A squabble ensued before the bout about the way Chisora’s hands were prepared for battle and the presence of Klitschko’s brother Wladimir in the challenger’s dressing room.Chisora, who faces a fine after slapping Klitschko in the weigh-in, was unsurprisingly booed and jeered by the 12,000-strong crowd as he made his way to the ring before ‘Dr Ironfist’s’ glitzy entrance."I’m not going to make any excuses, the only thing that beat me tonight was experience. I’m going to keep working hard and we’ll get a rematch.” Chisora immediately sought to get in his opponent’s face as soon as the 40-year-old stepped between the ropes and then spat water in his brother Wladimir’s face.