The 21-year-old beat the battle-weary Serb, who was clearly in pain as he stretched for balls, 7-6 (7/4), 7-5, 7-6 (7/3) in 3 hours and 21 minutes in a night match on Rod Laver Arena. Chung, the first

Nick Kyrgios was determined not only to win on Friday against Jo-Wilfried Tsonga, the 2008 finalist here, but to do so in the coolest manner possible. The ultimate aim was to impress watching Hollywood