What is ace in tennis?

Ace is a term used in tennis to describe a serve that is untouched by the opponent, resulting in a point for the server. An ace is achieved when the ball is served into the service box and the opponent fails to return or touch the ball. A powerful and accurate serve is required to achieve an ace, and it is often considered a key weapon for tennis players. Aces can help players to win games and are essential in tie-break situations. Tennis players with strong serves, like Pete Sampras and Serena Williams, are known for their ability to achieve aces regularly during their matches.