"There was no illness. There was no particular part of the body that was bothering me," said former world No. 1 after grueling win over Daniil Medvedev.
The American hopes to finish 2022 with a strong weekend, but a menacing threat looms.
The 26-year-old reached No.1 in 2022, but ends the season losing eight straight against the Top-10.
Rafael Nadal isn't retiring, but suggested one event where he'd like to someday say farewell.
Reigning Australian Open champion points to big-picture benefit of nine-time champion's return.
Wimbledon will alter its iconic all-white rule for women and girls in 2023.
Carlos Alcaraz talks historic achievement and comeback aim.
