NEW YORK — This is pretty much all anyone needs to know about defending champion Coco Gauff’s 6-3, 4-6, 6-3 loss to Emma Navarro in the US Open’s fourth round on Sunday: Gauff wound up with more double-faults, 19, than winners, 14.
“I don’t want to lose matches like this anymore,” Gauff said, attributing her serving problems to a mix of mechanical issues and mental ones.
The No. 3-seeded Gauff had won 10 matches in a row at Flushing Meadows, including the run to her first Grand Slam title a year ago.