American No. 1 John Isner has officially withdrawn from his quarter-final match-up at the Winston-Salem Open on Thursday afternoon with a sprained ankle.
Isner was scheduled to meet Lukas Rosol in the final eight at the tournament, but tournament officials revealed that the top seed injured his left ankle on Wednesday night during his third round victory over Mikhail Kukushkin.
“I am extremely disappointed to have to withdraw from the Winston-Salem Open, one of my favourite stops of the year,” said Isner. “It is extra disappointing for me given that it is my hometown tournament. I would have loved to continue to chase my third title here in Winston-Salem in front of these great fans, my friends and family.”
The loss denies Isner his third title at the event.
Seventh seed Rosol will play ninth-seeded Yen-Hsun Lu in Friday’s semifinals at Wake Forest Tennis Centre. The Taiwanese player defeated Andreas Seppi 6-4, 6-4 in the quarter-final round, hitting 7 aces and saving all five break points he faced against him during the encounter.
In other action, Jerzy Janowicz ended David Goffin’s 25-match winning streak with a 6-4, 6-2 victory in the quarter-final round of action. He hit 6 aces, won 71% of his first service points and converted on 4 of 7 break point opportunities.
Isner is still expected to play the US Open next week, which is scheduled to begin Monday, Aug. 25.