If the player is unable to hit the serve then it is an ace. But if the player hits the ball but does not return it, then it is a forced error.
What is an unreturned serve in tennis called
It is called a service ace!
The duration of The Unreturned is 1.25 hours.
Because you hit the ball with some kind of racket and that is why you call it a serve.
The Unreturned was created on 2010-04-25.