Serena Williams advanced to the last four of the WTA Championships today with a 6-3 7-6 victory over Wimbledon finalist Justine Henin.
Williams, the seventh seed, now meets either top seed Jennifer Capriati or France's Sandrine Testud.
Yevgeny Kafelnikov reached his sixth semi-final in seven tournaments today when he outclassed Czech Jiri Novak 6-3 6-3 to reach the last four of the Paris Masters Series.
In the semis the Russian will meet the winner of the quarter-final between Swede Andreas Vinciguerra and Dutchman Sjeng Schalken.