Petaling Jaya:South Korea were hoping to maintain their 100 per cent record in Olympic qualification as they traveled to Malaysia on Wednesday. But it was their hosts who produced the first real chance of the game from a corner - skipper Akmal Rizal's header flying just over the crossbar. The latter stages of the first half were dominated by a single player, South Korea's Cho Jae-jin. The Suwon Bluewings striker had already been booked for an extravagant dive before this shot whistled over the Malaysian woodwork. Moments later, Cho found himself unmarked inside the Malaysian penalty area, but his subsequent shot was well saved at his near post by Mohamad Syamsuri. Cho wasn't finished yet. With three minutes to go before the interval, Cho Byung-kuk was brought down by Malaysia's Mohammad Norisham inside the box and the referee pointed to the spot. Cho Jae-jin stepped up to take the penalty and despite the best efforts of Syamsuri, South Korea had the lead going into half-time. The Koreans tried to press home their advantage in the second half. Out of a chaotic melee in front of the Malaysian goal, Kim Do-heon's shot was charged down and then cleared off the line by defender Rezuan Radzy. But they were not able to add to their score and in an ironic twist at the end, Cho Jae-jin's antics cost him dear. With time running out, he poked home this shot after play had been halted for a foul. The referee, perhaps applying the letter of the law too strictly, produced a second yellow card, this time for time-wasting, a red card and a possible suspension for the man whose single goal proved the difference between the two sides. The win gave South Korea nine points from three matches and they remain top of the group A of Asian Olympic qualification, while Malaysia are last with just one point to show for their efforts. The Koreans next travel to China on May the 1st, while Malaysia face Iran on April 30th in Tehran.