Nick Kyrgios received a warning for spitting and complained about the smell of marijuana but just about kept his cool to clinch a second-round victory over Benjamin Bonzi at the US Open.
The Australian is one of the title favourites after his run to the Wimbledon final and strong form on the North American hard courts, and he admitted he is putting a lot of pressure on himself after battling to a 7-6 (3) 6-4 4-6 6-4 victory.
