Rafael Nadal's former coach says there's been “mistrust” surrounding the injured Djokovic’s physical condition long before fans lashed out in Melbourne.

“He completely outplayed me,” Zverev said of Jannik Sinner after their Australian Open final. “I’m serving better than him, but that’s it.”

Shortly after Sinner defeated Zverev to win his third Grand Slam singles title, the two starts flew back to Europe together from Melbourne.