The 27-year-old American beat France's Marion Bartoli 6-4, 6-1 in the final.
Fourth-seeded Venus Williams outpowered Bulgarian Tatiana Poutchek 6-1 6-2 to move into the second round of the Istanbul Cup on Tuesday.
Unseeded Sloane Stephens got the better of fellow-American Venus Williams in a thrilling contest to make it to her first Grand Slam final, at the US Open, in New York, on Thursday.
Top seed Maria Sharapova dodged the showers on her way to a 6-3, 6-2 victory over Taiwan's Chan Yung-Jan to set up a third round encounter against Venus Williams at the Sony Ericsson Open on Saturday.
The American has targeted a return to the world's top 16 by the French Open.
Another Indian, Yuki Bhambri and his Dutch partner Robin Haase also progressed to the quarter-finals.
Injured Venus Williams will join her sister Serena on the Fed Cup sidelines with Vania King named to take her place on the US team that will play the quarter-finals in Antwerp against Belgium.
Ekaterina Makarova, who upset an injured Serena Williams in the fourth round of the 2012 Australian Open, completed a Melbourne Park sweep of the Williams sisters by eliminating Venus 2-6, 6-4, 6-4 to advance to the second round on Monday.
A rare astronomical phenomenon on June 8, known as 'Transit of Venus', will turn the planet into a 'pinhead-sized black dot'.
Wimbledon champion Venus Williams will get back into serious action on Saturday when she plays the second singles rubber against Nadia Petrova, in the Fed Cup semi-final.
Venus Williams beat top seed Angelique Kerber on Wednesday to advance to a Miami Open semi-final against Britain's Johanna Konta.
British World No. 3 Andy Murray cruised to a straightforward victory over Bernard Tomic at the Sony Open but the Williams sisters had contrasting fortunes in Miami on Saturday.
Defending champion Andy Murray's match will complete a heavyweight Centre Court lineup on Friday that boasts four former Wimbledon winners and includes Venus Williams' return to the main stage.
Serena Williams was left all alone trying to crush an unlikely uprising on Wimbledon's hallowed lawns on Tuesday as sister Venus and Kim Clijsters suffered shock defeats in the women's quarter-finals.
Champion Venus Williams was knocked out of the Family Circle Cup beaten 7-5, 6-4 by 17-year-old Tatiana Golovin of France.
The world number two said her near-misses initially left her deflated and sick of tennis, but she was now over the pain.
Top seed Caroline Wozniacki and former World No 1 Venus Williams ensured Auckland Classic organisers' dream final remained on track with the duo both recording comfortable victories in their first round matches on Tuesday.
Belgian Kim Clijsters brought a swift end to Venus Williams's 15-match winning streak with a 6-2, 6-1 win in the Sony Ericsson Open final on Saturday. The 14th seed needed only 58 minutes to defeat the third-seeded American, who played with bandaging on both legs and said afterwards she may have trained too hard during the tournament.
Venus Williams and Vera Zvonareva registered second-round victories at the Advanta Championships in Philadelphia on Thursday.
"I generally don't play with pain, but this is a Grand Slam and I just wanted to win," said the American.\n\n
India's Yuki Bhambri and his French partner Albano Olivetti crashed out of Marrakech Open after losing the hard-fought semifinal to second seeds Lucas Miedler and Alexander Erler of Austria.
Venus Williams bravely fought off five match points to stun third seed Patty Schnyder 2-6, 7-6, 6-2 to enter the final in Stanford
Venus Williams' record-equalling fifth Olympic tennis medal was silver rather than gold as she and partner Rajeev Ram lost an all-American mixed doubles final to Bethanie Mattek-Sands and Jack Sock on Sunday .
Venus Williams crushed Frenchwoman Alize Cornet 6-3, 6-0 in the final of the Dubai Championship on Saturday, the veteran American bagging her first singles title since 2012.
IMAGES from the PNB Paribas Open played at Indian Wells in California on Monday
The 29-year-old American romped to a 5-0 lead against Poland's Agnieszka Radwanska and completed a 6-1 6-2 victory on auto-pilot as slumbering Court One fans applauded politely in temperatures soaring into the 30s Celsius again.
Injury-hampered Venus Williams made a first-round exit at the Dubai Open on Monday.
Venus Williams beat local favourite Kim Clijsters 6-2, 6-3 to reach the semi-finals of the Antwerp Diamond Games tournament.
Confident Venus Williams has her heart set on a glittering prize at this week's Antwerp Open.
Seven-times Grand Slam winner Venus Williams has withdrawn from this month's Australian Open saying she is not ready to return to action after being sidelined because of health reasons.
It was the former world number one's earliest loss at Wimbledon since she went out in the opening round on her debut here in 1997.
India's Yuki Bhambri and his Dutch partner Robin Haase squandered three match points in the deciding set to go down against Nicolas Barrientos of Colombia and Rafael Matos of Brazil in the Australian Open men's doubles first round in Melbourne on Tuesday.
Venus Williams proved she was still a force to be reckoned with after a two-year battle with injuries and illness as she downed Romania's Monica Niculescu 6-2, 6-3 to win the Luxembourg Open title on Sunday.
The tournament will see the Williams sisters appearing together for the first time outside the Grand Slams.
The former champion has withdrawn from the U.S. Open with a lingering stomach muscle injury.
The twice Wimbledon champion scored an easy victory over Katarina Srebotnik
Venus Williams staged a spirited comeback to down third seed Petra Kvitova 4-6, 7-5, 6-4 and reach the third round of the BNP Paribas Open in Indian Wells on Saturday.
