Maria Sharapova and Venus Williams moved into the second round at the China Open on Sunday with straight-set victories.
Maria Sharapova was knocked out of the Wuhan Open by Swiss qualifier Timea Bacsinszky 7-6 (3), 7-5 in the third round on Wednesday.
Top-seeded Sabine Lisicki hit 12 aces and broke her opponent five times to beat Francesca Schiavone of Italy 6-3, 3-6, 6-2 Saturday to reach the final of the Hong Kong Open.
Top-seeded Sabine Lisicki of Germany advanced to the semifinals of the Hong Kong Open with a 6-4, 6-3 victory over China's Zheng Saisai on Friday.
Top-seeded Sabine Lisicki of Germany advanced to the quarterfinals of the Hong Kong Open by beating Grace Min of the United States 6-1, 6-1 Tuesday.
Top-seeded Sabine Lisicki of Germany advanced to the second round of the Hong Kong Open by beating Monica Niculescu of Romania 3-6, 7-6 (3), 6-1 Tuesday.
Serena Williams will face an up-and-coming American player in the first round of the US Open.
Elina Svitolina of Ukraine successfully defended her title at the Baku Cup, defeating 2012 champion Bojana Jovanovski of Serbia in the final Sunday 6-1, 7-6 (2).
Defending champion Elina Svitolina advanced to the Baku Cup final after beating Francesca Schiavone of Italy 3-6, 6-1, 6-4 on Saturday.
Elina Svitolina of Ukraine moved her Baku Cup title defense into the semifinals by dispatching Pauline Parmentier of France 6-4, 6-4 on Friday.
Top-seeded Sorana Cirstea of Romania took a 6-1, 6-1, 50-minute beating from Stefanie Voegele of Switzerland in the Baku Cup second round on Thursday.
Top-seeded Caroline Wozniacki of Denmark advanced to the semifinals of the Istanbul Cup on Friday after being taken to three sets by eighth-seeded Karolina Pliskova of the Czech Republic.
Top-seeded Caroline Wozniacki of Denmark defeated Karin Knapp of Italy 4-6, 6-2, 6-1 to advance to the quarterfinals of the Istanbul Cup on Wednesday.
Victoria Azarenka was reasonably satisfied after losing her first match in more than three months, a three-setter in the first round of the Aegon Championships on Tuesday.
The seemingly ageless Tommy Haas upset third-seeded Stanislas Wawrinka 5-7, 6-2, 6-3 Thursday to reach the Italian Open quarterfinals.
Roger Federer appeared to lose focus in his first match back after the birth of his second set of twins, losing to 47th-ranked Jeremy Chardy of France 1-6, 6-3, 7-6 (6) in the second round of the Italian Open on Wednesday.