Zverev has not only pointed out that some umpires lack the knowledge of rules of tennis when Rafa returned Zverev's wide service that was called late by the Spaniard, but he also has uncovered the weaknesses of modern technology in pro tennis. One of Thiem's service balls landed somewhat flatly pass the service line which the instant replay shown on the screen unclearly; yet, assertively awarded to Thiem's serve. Zverev marked the ball that was not far from the umpire who refused to get down his chair to see. After a couple other balls that landed similarly close to the line that Sasha questioned but the umpire refused to take a close look at, it was obvious that some aspects of the pro matches are out of the living hands, eyes and brains as the modern technology decides our (the pro players and their fans) faith. Should we revolt against the trend (especially on clay) and have our officials to take closer look at or not?