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Alexander Zverev has added fuel to the ongoing debate surrounding the accuracy of Hawk-Eye line calling technology after a contentious incident during his recent match in Madrid. The German tennis star openly questioned the system’s reliability following a disputed call on the clay court. The incident, initially brought to light by a Reddit user (/u/theverge), showed a perceived difference between the ball’s mark on the clay and Hawk-Eye’s ruling. This has reignited discussions about the validity of automated officiating in tennis, especially on clay where the visual evidence of ball marks allows for direct comparison.