Agencia EFEMarch 24, 2013 13:31
International Sports Desk, Mar 24 (EFE).- American Venus Williams, the 19th seed, pulled out of the Sony Open in Miami before her match against countrywoman Sloane Stephens due to back problems.
The 32-year-old Williams, who won the title in Miami in 1998, 1999 and 2001, is a former world No. 1 who has won seven Grand Slam titles.
The 20-year-old Stephens will play defending champion Agnieszka Radwanska of Poland next.
Radwanska struggled in her 7-6 (7-5), 2-6, 6-3 victory over Slovakia's Magdalena Rybarikova at the Crandon Park tennis center on Key Biscayne.
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