Coco Gauff’s US Open title defence is over after she was beaten by Emma Navarro in the fourth round in New York.
Third seed Gauff produced a disjointed performance to lose 6-3 4-6 6-3 to fellow American and 13th seed Navarro.
Gauff hit 19 double faults, with three in the final game helping secure victory for Navarro and send her into a first US Open quarter-final.
“I lost in the first round the last two years and now to be making the quarter-finals is pretty insane,” said Navarro.
“This is the city I was born in and it feels so special to be playing here.”
Gauff was comprehensively beaten by Navarro just two months ago in the last 16 at Wimbledon.
She said she would need to maintain her focus after “collapsing” mentally in their previous meeting – but frailties on serve, including three back-to-back double faults in the third set, and 60 unforced errors helped Navarro secure victory again.
Navarro will go on to play 26th seed Paula Badosa in the last eight after the Spaniard thrashed China’s Yafan Wang 6-1 6-2 earlier on Sunday.
“Coco is an amazing player,” Navarro added.
“I have a ton of respect for her and I know she’s going to come back here and win this thing again.”
Navarro’s victory ends Gauff’s bid to become the first woman to defend the US Open title since Serena Williams in 2014.
It also makes the 23-year-old the youngest American woman to make the quarter-finals at both Wimbledon and the US Open in the same year since Williams in 2004.
Gauff hindered by serving woes
It was Navarro who made the brighter start, earning a break point in the opening game of the match after two double faults by Gauff in a sign of things to come.
Gauff recovered to hold, but some loose shots at 3-2 gave Navarro another break opportunity, and Gauff conceded with another double fault.
As Navarro secured the set, confidently holding to love after coming out on top of a 27-shot rally, a frustrated Gauff shrugged her shoulders and exchanged words with her coaching team.
Double faults continued to plague Gauff’s performance in the second set. Another at 3-3 offered Navarro a chance to break, which she took with a superb, dipping forehand winner down the line.
But this would signal a change in momentum as, sensing she was closing in on victory, Navarro suddenly struggled for rhythm, and Gauff immediately broke back.
Backed by the packed crowd, Gauff confidently held serve before breaking again to take the second set, cupping her ear in celebration and asking the crowd for more noise.
With the match evenly poised, it was Gauff’s troubles on serve which would again prove the difference, with three double faults in a single game handing Navarro the break for a 2-1 lead.
Gauff’s remaining service games were punctuated by more errors, with three more double faults gifting a match point to Navarro, before a long forehand confirmed Navarro’s win.