Serena Williams beats China's Li Na at WTA Championships
ISTANBUL (AP) - Serena Williams proved on Wednesday at the WTA Championships that even when her serve is malfunctioning, she can still beat a top player.
Williams beat 2011 French Open champion Li Na of China 7-6 (1), 6-3 for her second win in round-robin matches to seal a semifinal spot at the tournament for the top eight players in the world.
In another Red Group encounter, top-ranked Victoria Azarenka saved two match points before rallying past Angelique Kleber of Germany 6-7 (11), 7-6 (2), 6-4 in her first match at the event.
Because that match went to three sets, Williams advanced to the last four.