USA TENNIS BB&T ATLANTA OPEN
Australia's Alex de Minaur has been eliminated in the second round of the Atlanta Open, falling to defending champion John Isner.
The 19-year-old, who is the youngest player in the field, lost in straight sets to the Wimbledon semi-finalist on Wednesday (Thursday AEST) 6-3 6-2.
The American took advantage of his big serve, dishing out 15 aces in a match lasting just over an hour.
The top seed will now face Mischa Zverev, older brother of world No.3 Alexander, in the quarter-finals.
Zverev won his match against Russian veteran Mikhail Youzhny 6-4 6-2.
Fellow Australian Alex Bolt was eliminated on Tuesday (Wednesday AEST), missing out on a spot in the round of 16 after falling to Marcos Baghdatis.
The world No.169 was no match for the Cypriot who powered to a 6-4 6-1 victory on a cloudy afternoon in Georgia.
World No.23 Hyeon Chung also progressed to the round of 16 after he was pushed into a tiebreaker by plucky American Taylor Fritz.
The South Korean ended up beating the 20-year-old 6-4 7-6 (7-5) and was joined by American world No.53 Ryan Harrison.
Harrison recovered from a first set loss to beat Slovakia's Lucas Lacko 2-6 6-2 6-3.
Nick Kyrgios takes on American youngster Noah Rubin while Matthew Ebden will play Donald Young for a place in the quarter-finals.