Australian Open R4 previews and predictions: Djokovic vs. Medvedev, Nishikori vs. Carreno Busta
Novak Djokovic has not been seriously tested yet but he will run into a red-hot opponent in Daniil Medvedev at the Australian Open on Monday. Kei Nishikori and Pablo Carreno Busta are also aiming for a place in the quarterfinals. […]