Denis Shapovalov accidentally hit the chair umpire during his quarterfinal match at the Basel International. The Canadian was playing against Giovanni Mpetshi Perricard when the incident took place. Trying to return a shot, Shapovalov hit umpire Mohamed Lahyani on his head. The player then quickly ran to apologize and shook hands.

In the initial moments of the match, Shapovalov faced a scare as he hit the chair umpire. The Canadian was faced with a fierce serve from Perricard and Shapovalov tried to return it with a single-handed backhand. But he could not control the shot and managed just a touch.