As often happens when there is a critical moment, Alexander Zverev gets frustrated and breaks his racket. That's exactly what happened when he got broken in the third game of the fifth set, with Chung leading 3-0. 'I think we both played very good for four sets. I think the match was very high level. I don't think it was bad at all. Even in the fourth set, you know, after I lost my serve, I think I still played well. I still had chances to break him back'. Zverev said.