World number two Alexander Zverev has withdrawn from the U.S. Open as he continues his recovery following ankle surgery, tournament organizers said on Monday. The 25-year-old underwent surgery in June after damaging ligaments in his right ankle during this year’s Roland Garros semi-final against Rafa Nadal. “Alexander Zverev has withdrawn from the US Open. Get well soon, Alex!” organizers said in a brief statement. The German earlier said that he expected to be back from injury to play for Germany in the Davis Cup in September but added there was a chance that he could return earlier and feature at Flushing Meadows, where he reached the final in 2020.