“McCoco” didn't drop a set in Washington this summer, when they captured their first title and they won every match at last year’s junior US Open event in straights.
Their opponents on Monday were as tough as it gets: Ashleigh Barty—who won the title last year with CoCo Vandeweghe—and Victoria Azarenka, both of whom will be motivated to stick around after earlier-than-expected singles losses. Barty and Azarenka taught the teens that they still have a ways to go with a 6-0, 6-1 demolition. They join such doubles standouts as Aryna Sabalenka/Elise Mertens and Gabriela Dabrowski/Yifan Xu in the quarterfinals.
On the men’s side, Robert Farah and Juan Sebastian Cabal, the top seeds, are still alive and will face the No. 13-seeded Dutch team of Robin Haase and Wesley Koolhof next. The No. 2 seeds, though, are out: Lukasz Kubot and Marcelo Melo fell to Leonardo Mayer and Joao Sousa in the third round. Those two face French Open champs Kevin Krawietz and Andreas Mies, finally experiencing wins again after struggling since Roland Garros.
Jamie Murray and Neal Skupski, the No. 15 seeds, are having the best tournament of their brief time together and have advanced to the quarterfinals. Murray’s pulling out all the stops in helping them get this far.