Nick Kyrgios was enjoying one of the best weeks of his career and then just like that, he wasn't. The Australian catapulted into the Indian Wells quarterfinals with an upset over Novak Djokovic, setting up a showdown with none other than Roger Federer.
Instead of playing one of the biggest legends of the game for a spot in his second-ever ATP Masters 1000 semifinals, Kyrgios had to pull out with what appears to be food poisoning.