The ace rates of top servers tend to vary significantly between grass and hard courts due to the differences in surface characteristics. On grass courts, the ball tends to skids off the surface faster, leading to a lower bounce, which can favor powerful serve tactics and reward precision, resulting in higher ace rates, particularly at tournaments like Wimbledon. In contrast, hard courts offer a more consistent bounce and often enable players to generate more spin, which can make it easier for returners to anticipate and react to serves, potentially leading to a lower ace rate for top servers. However, many elite servers still post impressive ace counts on both surfaces; the typical trend shows slightly elevated ace rates on grass compared to hard courts, underscoring the distinct strategic dynamics of each playing surface.