Nathan, a co-founder of the sports website Defector Media, has published “ Changeover: A Young Rivalry and a New Era of Men’s Tennis ” with Gallery Books. He spent the 2024 season squarely focused on Sinner and Alcaraz, in which they split the four majors and accelerated their ascension into a tennis stratosphere of their own creation.

Jannik defeated Terence Atmane in the semi-final in Ohio, celebrating his 200th ATP hard-court win and becoming the eighth-youngest player to achieve that in the Open era, standing right behind Rafael Nadal.

Afterward, Sinner didn't have a traditional press conference. Instead, he was asked a couple of questions by the ATP media and provided answers. One of the things asked was if there was anything specific he wanted to work on going into the US Open.

The No. 1-ranked Sinner, the defending champion in singles at Flushing Meadows, was supposed to compete in mixed doubles with Katerina Siniakova.

An illness prevented Jannik Sinner from competing against his top rival Carlos Alcaraz in the final of the Cincinnati Masters 1000. The world number 1 was very far from the ideal shape, but he still tried to start the match, retiring after five games having realized that the situation was getting worse.

You can watch the first two rounds of the U.S. Open mixed doubles championship starting today at 11 a.m. ET on ESPN2 and from 1 p.m. ET on ESPNEWS. The action will also stream on ESPN+. The first two rounds of the U.S. Open mixed doubles championship will be played today, beginning at 11 a.m. ET.

Jannik Sinner’s preparations for the US Open ended in emotional scenes as he retired from the Cincinnati final after just five games and 23 minutes.