Leila Fernandez, A Teenage Girl, Ends Naomi Osaka's Championship Defence At The US Open.

18-year-old Fernandez took advantage of the capital as Osaka lost her temper with a splendid 5-7 7-6 (7-2) 6-4 win. Osaka was broken when she served for the second set, and a poor tiebreak gave Fernandez the initiative under the New York lights. The teenager couldn't help but smile as he got his hands on a fantastic win.

After breaking in the second set, Osaka never regained her composure, dropping her missiles twice as the tie-breaker took off. Fernandez broke it in the third set's opening game and used a powerful forehand to fight for victory. In the fourth round, she met another Grand Slam winner, Angelique Kerber.

"I knew from the start that I could win," said Fernandez.

"I'm not focused on Naomi, just what I have to do. The crowd makes a big difference - they helped me win." Osaka has endured a difficult few months and has taken an eight-week break to maintain her mental health after speaking openly about her struggle with depression.

He had limited time on the court, playing just five games in the past two months and making the transition to the third round in New York after his opponent withdrew. Although Fernandez compared her with her strong forehand and serve, Osaka looked controlled in the first and second sets.

Osaka played 6-5 and lost their rhythm, giving Fernandez a crucial break as he sent off his forehands for long stretches.

The tiebreak quickly moved away from two-time US Open winner Osaka, who beckoned herself and the square as the crowd gathered behind her opponent. World number 70 Fernandez stood in stark contrast to Osaka, celebrating their strong game and pumping the air as Osaka's cross from the front line led the game into the decider.

Osaka spent the turn of the third set with a towel over her head to regain her composure, but her disappointment was still visible when she fell into the early break and had to retreat two break points to avoid dropping three times.

While he was showing his best form, he couldn't break Fernandez's serve as the teenager ate from the crowd.

Osaka was booed when Fernandez had to wait for 30-0 with the teenager and serve for the game, but the Canadian responded with a win with a dropkick and won three match points. All he needed was one, so he turned around and celebrated while Osaka sent a forehand into the cross.

Just hours after 18-year-old Carlos Alcaraz beat Stefanos Tsitsipas, another teenager wowed Arthur Ashe Stadium with a bold and humble display. A tight, high-quality match looked to be heading towards Osaka as she went straight for a 6-5 win. But at that moment, the defending champion's forehand let them down, and their disappointment set in.

After taking a break from playing sports to keep their sanity, Osaka had no game but looked threatening again after dropping their serve early in a crucial set. But it was too late. Fernandez's left serve had plagued Osaka all night, and thanks to a few players coming back in tumult, the Canadian didn't miss his chance.