Overview

• Alexander Zverev received a warning for unsportsmanlike conduct after photographing a disputed ball mark during his Madrid Open match against Alejandro Davidovich Fokina.
• Zverev alleged a system malfunction after contesting an electronic line call he believed was incorrect, marking the latest player protest this clay season.
• World number one Aryna Sabalenka and Victoria Azarenka have also voiced frustrations over similar disputed calls in recent tournaments.
• Concerns over the accuracy of electronic line calling on clay stem from the unique surface dynamics, with critics questioning its reliability.
• The French Open remains the only major clay tournament to retain human line judges, diverging from the ATP and many WTA events' adoption of electronic systems.