ACAPULCO, Mexico (AP) Top-seeded Kei Nishikori of Japan beat fifth-seeded Alexandr Dolgopolov of Ukraine 6-4, 6-4 on Thursday to reach the Mexico Open semifinals.
Nishikori will face fourth-seeded Kevin Anderson of South Africa, a 3-6, 6-3, 6-3 winner over Serbia's Viktor Troicki in the hard-court event at The Fairmont Acapulco Princess.
In the night quarterfinals, second-seeded David Ferrer of Spain faced Australia's Bernard Tomic, and sixth-seeded Ivo Karlovic of Croatia played Ryan Harrison of the United States.
In women's play, Bulgaria's Sesil Karatantcheva topped Monica Puig of Puerto Rico, 2-6, 7-6 (7), 6-4. Karatantcheva will play the winner of a late match between fifth-seeded Timea Bacsinszky of Switzerland and Johanna Larsson of Sweden.
In the other quarterfinals, top-seeded Maria Sharapova of Russia faced Magdalena Rybarikova of Slovakia, and third-seeded Caroline Garcia of France played Mirjana Lucic-Baroni of Croatia.