Iga Swiatek returns a shot against Sorana Cirstea during the Cincinnati Open at the Lindner Family Tennis Center on Wednesday.

Third seed Iga Swiatek reached the Cincinnati quarter-finals with a 6-4 6-4 win over Sorana Cirstea on Wednesday, while defending champion Jannik Sinner beat Adrian Mannarino following a lengthy rain delay.

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

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