World tennis number one Serena Williams fought her way to a 7-5 7-5 win over defending champion Li Na to reach the final of the Cincinnati Open, as she closes in on one of the few titles to elude her.
The 31-year-old American can fill that hole in her resume on Monday when she takes on Belarusian world number two Victoria Azarenka, who was a 4-6 6-2 6-3 winner over 2009 champion Jelena Jankovic of Serbia.
