Zverev tore ligaments in his right ankle in the semi-finals of the Major on clay last year when he was leading against Rafael Nadal (7-6, 6-6).
Since then, he had only played two games, in January in the United Cup, for two defeats in straight sets against Jiri Lehecka (81st) and Taylor Fritz (9th).
To discover
Australian Open: ladies schedule and results
Australian Open: men's schedule and results
More info to come...