Defending champion Agnieszka Radwanska defeated Rio Olympics gold medalist Monica Puig on Friday to set up a semifinal showdown with Caroline Wozniacki at the Toray Pan Pacific Open in Tokyo.
Milos Raonic was surprisingly ousted by local hope Mikhail Youzhny 2-6, 7-6 (6), 6-4 in the second round of the St. Petersburg Open on Thursday.
Monica Puig rallied to upset 2013 champion Petra Kvitova 1-6, 6-4, 6-4 to reach the Pan Pacific Open quarterfinals on Wednesday.
The Tennis Integrity Unit says French player Constant Lestienne has been banned for seven months for gambling on matches, with half of the sentence suspended.
Doubles pair Sam Groth and John Peers beat Slovakia's Andrej Martin and Igor Zelenay 6-4, 6-2, 6-7 (3), 7-6 (2) on Saturday to clinch Australia's Davis Cup World Group playoff 3-0.
Katerina Siniakova of the Czech Republic overpowered China's Zhang Shuai 6-3, 6-0 on Saturday to reach the final of the Japan Open.
Nick Kyrgios and Bernard Tomic claimed straight-set victories to give Australia a commanding 2-0 lead over Slovakia after the opening-day singles in the Davis Cup World Group playoff in Sydney on Friday.
New Zealand raced to a 2-0 lead in their Davis Cup Asia/Oceania Group I tie against Pakistan after dominating the opening singles rubbers.
Third-seeded Yulia Putintseva of Kazakhstan defeated Maria Sakkari of Greece 6-4, 6-3 on Wednesday to advance to the second round of the Japan Open.
Australian number one Nick Kyrgios played down concerns over his hip injury on Tuesday and said he felt ready to play this week's Davis Cup World Group play-off against Slovakia.