Zverev, partnering Brazilian tennis player Marcelo Melo in doubles, came perilously close to hitting umpire Alessandro Germani when he repeatedly assaulted the umpire's chair with his racquet after a 6-2, 4-6 (10-6) defeat to the British-Finn pair of Lloyd Glasspool and Harri Heliovaara.

from Times of India https://timesofindia.indiatimes.com/sports/tennis/top-stories/watch-vicious-alexander-zverev-attacks-umpires-chair-repeatedly-with-his-racquet-almost-hits-the-umpire/articleshow/89770059.cms