Nick Kyrgios Beats US Open Defending Champion To Reach Quarter-Final.

Nick Kyrgios has ended Daniil Medvedev’s defence of the Us Open title as he earned an enthralling four-set win on an entertaining night in New York.

The 27-year-old controversial Australian demonstrated all of his shot-making and possibility for creating drama in a 7-6 3-6 6-3 6-2 win in the last 16, with Medvedev to lose his ranking as world number one after the defeat.

Wimbledon runner-up Kyrgios goes on to play another Russian, 27th seed Karen Khachanov, in the quarter-finals.

Khachanov reached his third Grand Slam quarter-final by outlasting Spanish 12th seed Pablo Carreno Busta in a 4-6 6-3 6-1 4-6 6-3 win.