Top-seeded Roger Federer defeated Jarkko Nieminen, 6-2, 7-5, to reach the quarterfinals of the inaugural Istanbul Open. He will play Daniel Gimeno-Traver, who beat Mikhail Kukushkin, 6-3, 6-3.
u25a0 Robin Haase saved two match points as he came from behind to beat top-seeded Feliciano López, 4-6, 7-6 (2), 6-4, in the second round of the Estoril Open in Portugal. In the quarterfinals, Haase will face seventh-seeded Nick Kyrgios, a 6-3, 6-3 winner over Filip Krajinovic.
u25a0 Top-seeded Karolina Pliskova reached the Prague Open quarterfinals by beating Tsvetana Pironkova, 3-6, 6-3, 7-6 (1).
u25a0 Kristina Mladenovic upset Garbiñe Muguruza, the No.