(Reuters) -Third seed Iga Swiatek reached the Cincinnati quarter-finals with a 6-4 6-4 win over Sorana Cirstea on Wednesday, while Alexander Zverev needed just one game to complete victory over Brandon Nakashima before rain halted play again.

Wimbledon champion Swiatek extended her perfect record against Cirstea to 5-0 and will next face the winner of an all-Russian clash between Anna Kalinskaya and Ekaterina Alexandrova.

“We played many tough matches, so I know Sorana can really hit the ball well, especially on faster surfaces,” Poland’s Swiatek said.

“I’m happy I was solid enough. I was trying to be proactive with my serve, not many of my first serves went in, but I was happy I was solid on my second serves.”

Fellow Pole Magda Linette upset fourth seed Jessica Pegula 7-6(5) 3-6 6-3 i

See Full Page