The third-seeded Williams underwent a procedure on her big toes this month, forcing her to withdraw from a Thailand exhibition, but she managed to dispatch Varvara Lepchenko 6-2, 6-1 to begin the WTA season.
The American star and WTA Player of the Year is coming off an outstanding 2012, during which she won Wimbledon, the U.S. Open, the London Olympics and the season-ending Championships.
Other Day 1 winners included 2012 runner-up Daniela Hantuchova, Jarmila Gajdosova and Urszula Radwanska.
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