Florida: Defending champion John Isner of USA advanced to the Miami Open quarterfinals with a 7-6 (5), 7-6 (3) win over 19th seed Kyle Edmund of United Kingdom here at Hard Rock Stadium on Tuesday.
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With this win, Isner won nine straight matches at the Miami Open dating back to winning the trophy last year. That victory -the most prestigious of the 14 titles in his career – made him the first American champion of this tournament since Andy Roddick in 2010.
Big-serving Isner hit 17 aces and won 81 per cent of his first-serve points to reach the quarter-finals without dropping a set through three matches.
At one point of the match, however, it seemed the USA star had lost momentum after he failed to serve out the opening set while leading 5-2 and then was forced to recover from a double mini-breakdown in the first tiebreak.
Meanwhile, Australia's Nick Kyrgios was given a point penalty for an audible obscenity during his loss to Borna Coric.
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Kyrgios, who produced perhaps the shot of the tournament early in his 4-6 6-3 6-2 loss to 11th-seeded Coric, was seen cursing a spectator which forced umpire to impose the penalty that put him down a double break in the third.
It was the latest inclusion to Kyrgios' long list of offences at Miami Open. Earlier he made headlines for controversial underhanded serves and for a verbal spat with a spectator.
