Williams, coming off a win Sunday in the finals of the Korea Open, breezed though her match Wednesday, posting a 6-0, 6-4 rout over Vania King. Williams moved into the tournament quarterfinals where she will meet Alicia Molik, who advanced with an even more lopsided 6-1, 6-0 romp over Aleksandra Wozniak.
Second-seeded Sania Mirza was pushed to three sets by Casey Dellacqua before winning 6-4, 3-6, 6-4 and No. 5-seeded Virginie Razzano beat Elena Baltacha 6-2, 6-2. Also, eighth-seeded Flavia Pennetta took out Abigail Spears 6-4, 7-6 (7-2).
Mirza next goes against Pennetta while Razzano is paired against Camille Pin, who defeated Jelena Kostanic Tosic, 6-1, 6-0 in the second round.
The fourth quarterfinal has Caroline Wozniacki playing Klara Zakopalova. Wozniacki was a 7-6 (7-3), 4-6, 6-1 winner over Meng Yuan and Zakopalova outlasted Urszula Radwanska 6-2, 3-6, 6-2 in second-round play.
The eventual tournament champion will earn $25,840.
Swim Week Miami Beach 2014 [PHOTOS]