Alexander Zverev is permitted to use his mobile phone during Wimbledon matches due to a medical exemption for his type 1 diabetes. The All England Club confirmed that Grand Slam tournaments maintain a list of diabetic players who can utilize phones to monitor glucose levels and administer insulin as needed.

Zverev, a finalist in the men's singles, uses one phone specifically for glucose monitoring, displaying real-time data from his monitor. This bypasses the need for frequent finger-prick tests during changeovers. He explained that this exemption allows him to manage his condition without interrupting play.

This practice comes after a recent incident at the Halle Open where a malfunctioning monitor led Zverev to administer an excessive amount of insulin. The error required him to consume approximately 350g of sugar to correct the resulting high insulin levels and left him feeling unwell.