Three-time champion Rafael Nadal advanced to the quarter-finals while Naomi Osaka of Japan ended her title defence at the ongoing US Open.
In men's singles event, Nadal battled past 2014 titlist Marin Cilic 6-3, 3-6, 6-1, 6-2 on Monday night to reach the last eight at the Flushing Meadows for the ninth time.
With the Spaniard advancing and defending champion Novak Djokovic retiring to Stan Wawrinka on Sunday, tennis fans can expect a much-anticipated Roger Federer-Rafael Nadal final at the US Open.
The two have somehow never met in Flushing Meadows. However, for that to happen, Nadal will first have to get past Diego Schwartzman, who took out No. 6 seed Alexander Zverev earlier in the day.
Meanwhile, in women's singles event, top seed Osaka was stunned by Belinda Bencic of Switzerland 7-5, 6-4 in the fourth round at the Arthur Ashe Stadium.
The result also means that Osaka -- who was bidding to become the first woman to defend the title in New York since Serena Williams reeled off three in a row, between 2012 and 2014 -- will lose the world No. 1 ranking after the tournament to Roland Garros champion Ashleigh Barty of Australia.
Bencic will now face Donna Vekic of Croatia -- who defeated Julia Goerges from Germany in another fourth round match -- for a place in the semis.
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