Serena Williams returns a shot to Karolina Pliskova, of the Czech Republic, during the semifinals of the U.S. Open tennis tournament, Thursday, Sept. 8, 2016, in New York.

Hacktivists Reveal Many US Olympians Were Allowed To Taking Banned Substances

A second batch of secret data from the World Anti-Doping Agency’s database of athletes who took part in the 2016 Rio Olympics was released by the hacking group Fancy Bears; the list includes 10 ‘doping addicts’ from the US and five more from Britain.