Emma Navarro goes on the attack as she wins the coin toss and elects to serve first.

Image source, Getty Images

Coco Gauff was aiming to become the first woman to retain her crown at Flushing Meadows since Serena Williams in 2014 but succumbed to a 6-2 4-6 6-3 loss to Olympic team-mate Emma Navarro.

Navarro is playing in her hometown city and said: “It’s pretty insane. I lost in the first round the last two years and now to be making the quarter-finals is pretty insane.

“This is the city I was born in and it feels so special to be playing here.

“Coco is an amazing player. I have a ton of respect for her and I know she’s going to come back here and win this thing again.”

Jeff Tarango
Former American tennis player on BBC Radio 5 Sports Extra and BBC Sounds

The weather conditions are perfect out there, I'm looking for Emma Navarro to use her legs today but Paula Badosa is playing the best that she has played in a year and a half so this is going to be a great match.

Two real fighters and scramblers. Badosa has got a little more firepower so I expect her to be the favourite, even though she is supposed to be the underdog, but Navarro is impressing me every day of the week.

Paula Badosa beat China’s Yafan Wang to book herself a second Grand Slam quarter-final appearance,

The Spanish star revealed she had contemplated retiring earlier this year after a back injury saw her miss out on competing in the second half of 2023. The hiatus saw the New York-born player drop from a ranking of number two in the world to outside the top 50.

She found it hard on her return to the sport and, amid a run of poor results earlier this summer, considered a life away from tennis.

She said: “There were some moments I was thinking about it, like in the clay court season when I was losing very soon in the tournaments, and I’m like, ‘Wow, what can I do now?’.

“For me, tennis doesn’t make sense if I’m not on the top. I want to play big stages. I want to play the last rounds of every tournament. I want to be one of the best players in the world. But at the end, I always had this small part of me I had faith on myself, I had this belief that I could come back.”

She will meet American Emma Navarro, who ended Coco Gauff’s title defence.

Arthur Ashe Stadium (quarter-finals)

Not before 17:00 BST

• WS: Paula Badosa (Esp, 26) v Emma Navarro (USA, 13)
• MS: Taylor Fritz (USA, 12) v Alexander Zverev (Ger, 4)

Not before 00:00 BST

• WS: Zheng Qinwen (Chn, 7) v Aryna Sabalenka (Blr, 2)
• MS: Grigor Dimitrov (Bul, 9) v Frances Tiafoe (USA, 20)

Hello and welcome along to BBC Sport's coverage of day nine of the US Open. If you press the 'listen live' tab at the top of this page you will be able to follow live commentary from BBC Radio 5 Sports Extra

American players are still going along nicely in the US Open, with the United States represented in both the men's and women's singles quarter-finals.

Today, three Americans are among those all bidding to earn places in the semi-finals.

Image source, Getty Images