Why did Alexander Zverev take an injection during Wimbledon final?

Alexander Zverev utilised a medical exemption to monitor his diabetes through injections during the Wimbledon final. While competing on Centre Court in the men's singles final against Jannik Sinner, Zverev experienced a nasty fall. This incident caused him to wince in pain, sparking significant injury concerns during one of the most prominent matches in tennis. The French Open champion continued his battle against Sinner despite these health requirements and the physical setback encountered during the game.