In tennis when the opposing player is unable to return the first serve, this is known as an ace. An ace is also a hole in one in Golf, and obviously card games.
Ace serve. Often just past the serve line and in the crack.
Hmmm.....Second Serve Ace!
An "ace" happens on a serve where you hit the birdie to the opponents side and they miss. This is an "ace".
You can only be awarded an ace when you serve the ball.
Tennis.
ace
A serve which is not returned.
An ace
No, an ace is when you serve the ball so well that it can not be returned.
ACE
ace
It is called a service ace!