text: Ma, 27, becomes only the fifth man to have won singles titles at the World Championships, World Cup and Olympics.
  With defending champion Zhang taking silver, China have claimed nine of the last 12 Olympic men's singles medals.
  Japan's world number six Jun Mizutani beat Belarusian Vladimir Samsonov 4-1 in the bronze medal match.
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target: China's world number one Ma Long beat countryman Zhang Jike 4-0 to win the men's singles and claim a table tennis Grand Slam.