Andrew Dampf

Novak Djokovic, the top-ranked Serb who had seemed invincible in all of the biggest tournaments this year, lost to Alexander Zverev in the semifinals.

Olympics organizers and swimming's governing body leapt to the defense of China's world record-breaking teen sensation Ye Shiwen, saying suspicions that she doped were "crazy" and motivated by jealousy and the IOC stressing its confidence in the drug-testing program.