Multiple outlets describe how sun and stadium design can produce sharp or shifting shadows on tennis courts, creating discomfort for players and fans. At certain tournaments, the placement of stands, roofs, and other structures can block sunlight in a way that leaves parts of the court in darkness while other areas remain brightly lit. As the sun moves during a match, the boundary between light and shadow can shift across the playing surface. That visual change can make it harder for players to track the ball and judge depth, angle, and pace, particularly when the ball crosses from a well-lit area into shadow. Spectators are also affected when shadows cut across sightlines from seats or when glare and dimming occur at the same time. The sources note that these issues tend to recur “every year” at some events, depending on the venue layout and the time of day and season. The reports frame the problem as a recurring design-and-sun interaction rather than an isolated incident, with the main impacts tied to visibility, eye strain, and difficulty maintaining consistent visual conditions.