Which Thai tennis player reached a career-high ranking of world number 9 in singles?

• A Danai Udomchoke
• B Sonchat Ratiwatana
• C Paradorn Srichaphan ✓
• D Sanchai Ratiwatana

Paradorn Srichaphan was the first Asian male tennis player to reach the ATP top 10, peaking at world number 9 in 2003 and becoming a national sporting hero.