Simona Halep, the former Wimbledon and French Open champion tennis player, has expressed dismay at the way Iga Swiatek's ...

Dr. Vin Gupta joins José Díaz-Balart to describe everything you need to know about the rise of "walking pneumonia" and other ...

Novak Djokovic said shared experiences with Andy Murray make the Scot the "perfect coach" as he bids to win a record 25th ...

The top-ranked men's and women's tennis players have both tested positive for trace amounts of banned substances this year.

Iga Swiatek is the second high-profile tennis player to test positive for a banned substance this year, joining Jannik Sinner ...

A new study that used wrist-worn devices tracked more than 70,000 adults and found irregular sleep to be strongly associated ...

Since August, Kyrgios has injected himself into Jannik Sinner's doping controversy by commenting so much about it online.