Answer:
It would take place in a baseball match.
Explanation:
An umpire is a name used in some sports to referring to an official who watches a game to enforce the rules and arbitrate on the matter from the play.
The name Umpire is especially used in baseball and tennis matches. But the state said by the umpire "You´re out!" is more likely to be said by a baseball umpire rather than a tennis one.
I hope this answer helps you.