Williams was granted wildcards to participate in the Miami and Charleston tournaments. In the first round of Miami — her first singles match since the 2011 U.S. Open — Williams defeated Japanese veteran Kimiko Date-Krumm, in straight sets. In the second round, she defeated No. 3 Petra Kvitová, her first top-3 victory since beating Svetlana Kuznetsova in 2009. In the third round, she saved a match point and defeated Aleksandra Wozniak in a three-set tiebreaker that ended a nearly three-hour match. In the round of 16, she bested No. 15 Ana Ivanovic in three sets to reach the quarterfinals, where she lost to the eventual champion, Agnieszka Radwańska in straight sets. Her run improved her ranking to No. 87. A week later in Charleston, she reached her second consecutive quarterfinal, where she lost in three sets to Samantha Stosur.
Williams was granted wildcards to participate in the Miami and Charleston tournaments. In the first round of Miami — her first singles match since the 2011 U.S. Open — Williams defeated Japanese veteran Kimiko Date-Krumm, in straight sets. In the second round, she defeated No. 3 Petra Kvitová, her first top-3 victory since beating Svetlana Kuznetsova in 2009. In the third round, she saved a match point and defeated Aleksandra Wozniak in a three-set tiebreaker that ended a nearly three-hour match. In the round of 16, she bested No. 15 Ana Ivanovic in three sets to reach the quarterfinals, where she lost to the eventual champion, Agnieszka Radwańska in straight sets. Her run improved her ranking to No. 87. A week later in Charleston, she reached her second consecutive quarterfinal, where she lost in three sets to Samantha Stosur.