AP Sports Writer
DOHA, Qatar (AP) -- Serena Williams moved with a victory of becoming the oldest top-ranked women's player, sweeping aside Urszula Radwanska 6-0, 6-3 on Thursday to reach the Qatar Open quarterfinals.
If the 31-year-old Williams reaches the semifinals by beating seventh-seeded Petra Kvitova she will return to No. 1 for the first time in 2
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