Former Olympic champion Sun serving up vital insight

A decade since hanging up her racket, Sun Tiantian's dedication to Chinese tennis is as strong as ever.

Sun is remembered most for winning women's doubles gold along with Li Ting at the 2004 Athens Olympics. Together with Serbian Nenad Zimonjic, she also won the mixed doubles title at the 2008 Australian Open.

These days, Sun's experience on the tour is a big advantage in her role as deputy director of the Central Plains Tennis Center, the venue for last week's Zhengzhou Open.