I still haven't given up on US Open: Zverev on recovering after ankle surgery

World number two Alexander Zverev, who is undergoing rehab after having surgery on his right ankle, said he still hasn't given up on playing at US Open, beginning August 29. "And, of course, I want to be part of...Davis Cup for myself," he added. Zverev had twisted his ankle in French Open semi-final against Rafael Nadal on June 3.