Zverev beats Darderi and the clock to reach US Open quarters

Coco Gauff, the 22-year-old former champion, advanced to the US Open quarter-finals by defeating rising American star Iva Jovic on Monday. Gauff, seeded fourth, won the match 6-1, 6-4 in 80 minutes. This marked a rare occasion where Gauff, who is still young, faced a younger opponent, Jovic, who is 18.

Despite Jovic's strong performance in the second set, Gauff's serve and overall play proved to be the key factors in her victory. Gauff stated that she served well and expected to face more challenges in future matches. She mentioned that her improved serve has given her a sense of confidence throughout the tournament.

Gauff's win was her best match so far this year, along with a second-round victory over Spain's Paula Badosa. She has yet to lose a set during the US Open, attributing her success to her ability to rely on various strategies to win points.

In the second set, Jovic accelerated her game by rushing the net behind strong shots, keeping Gauff on the defensive. Their net exchanges garnered applause from the fans, and Gauff ultimately secured the win with a surprise serve-and-volley move that Jovic couldn't return.

Gauff will next face French Open champion and fifth-seeded Mirra Andreeva of Russia in the quarter-finals. Despite Gauff's impressive record against Andreeva, who is her most frequent opponent, she acknowledged that most matches have been closely contested. Gauff noted that Andreeva, having recently won a Grand Slam title, will approach the match differently due to her current mindset.