PARIS, May 16 (Xinhua) -- Former Olympic champion and world No. 8 Ma Lin was upset by Japan's Kenta Matsudaira in the second round the World Table Tennis Championships here on Thursday.

The 33-year-old Ma, gold medalist in the Beijing Olympic Games, was simply overpowered by Matsudaira 5-11, 7-11, 4-11, 14-12, 7-11.

The 58th-ranked Japanese also took a sweet revenge on his defeat four years ago at the 1999 Yakohama worlds, when he forced Ma to seven sets but lost 3-4.

Ma, who has won four World Cup titles plus his Olympic gold medal, is playing his ninth and last world championships.