He is currently sponsored by the table tennis product company, Butterfly. His World Ranking had been in the top 10 since the 2005 World Championships in Shanghai until April 2008. His highest ranking was number 5 in the May 2007.
World Cup: 2nd (2009, 10).
3rd (2007).
Singles (as of December 26, 2010) Olympics: QF (2008). World Championships: San Francisco (2005). World Cup appearances: 5. Record: 4th (2009). Pro Tour winner (7): of Korea, Chile, United States of America Open 2005. Chinese Taipei Open 2006. of Korea Open 2007. Japan Open 2009. Brazil Open 2012. Runner-up (2): United States of America Open 1996. Japan Open 2003. Pro Tour Grand Finals appearances: 6. Record: runner-up (2006). San Francisco (2005). Asian Games: San Francisco (1998, 2002). Asian Championships: San Francisco (2007). Men"s Doubles Olympics: QF (2000). World Championships: San Francisco (2001, 03). Pro Tour winner (10): United States of America Open 1997. Danish Open 2001; of Korea Open 2002. Chile, United States of America, German, Swedish Open 2005. of Korea Open 2007; Polish Open 2009. Brazil Open 2012. Runner-up (9): United States of America Open 1996. China Open 1999. Qatar, Japan Open 2001. Qatar, United States of America, Danish Open 2002. Croatian Open 2003; Japan Open 2009. Pro Tour Grand Finals appearances: 3. Record: winner (2001). Runner-up (2000, 05). Asian Games: runner-up (1998, 2002). Asian Championships: runner-up (1998). San Francisco (1994, 2005). Mixed Doubles World Championships: runner-up (2001). Asian Games: runner-up (1998). Asian Championships: winner (2007). San Francisco (1996, 98). Team Olympics: 2nd (2012). 3rd (2008). World Championships: 2nd (2006). 3rd (1997, 2001, 04, 10). World Team Cup: 2nd (2009, 10). 3rd (2007). Asian Games: 2nd (1998, 2002, 06, 10). Asian Championships: 1st (1996). 2nd (1994, 98, 2005).
