Atlanta Open: Isner beats Zverev in quarter-finals, reaches semis
Isner needed one hour and 37 minutes on Stadium Court to oust Zverev and reverse a run of defeats to the seventh-seeded German.
American John Isner showed why he is playing some of the best tennis of his career, beating Mischa Zverev 7-5, 4-6, 6-1 in the quarter-finals of the Atlanta Open.
"It was a weird match. The balls were bouncing everywhere, it was tough to control. I was happy to get through in three sets," Isner said.
The 6-foot-10 Isner is at number nine in the ATP world rankings. He reached a career-best No. 8 last week after making it to the semis of Wimbledon.
Isner will next face fourth seed Matthew Ebden, who breezed past Marcos Baghdatis 6-3, 6-2 in one hour, 12 minutes.
The Aussie is into his second semi-final of the season, following a run to the final four at the Libema Open.
Isner is now two victories from winning his second title of the year.
The match shaped up to be a service battle as both players needed just a break each to split the first two sets.
Isner ended up losing just two points (38/40) on is first serve and this was the fourth straight contest they went to a deciding set.
Ebden, 30, has not dropped a set this week, saving the only break point he faced to eliminate Baghdatis.
In the other quarter-finals, Ryan Harrison outlasted Chung Hyeon 6-7 (3/7), 6-2, 7-6 (7/5) and Cameron Norris was leading 7-5, 3-0 in the second set when Nick Kyrgios retired due to a left hip problem.
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