Retired Chinese star Li Na opened the WTA Finals in Singapore with a ceremonial first serve on Monday. (Also Read: A World of Sports is Coming to Asia)
Li, wearing high heels and a flowing black evening dress, hit the serve at the end of a gala opening ceremony watched by thousands of fans.
The 32-year-old Australian Open champion had been expected to headline the eight-player event before she retired from tennis last month.
World number one Serena Williams, who is trying to win her third straight title at the year-ender, will play the first match against Ana Ivanovic.