official scorer

US /əˌfɪʃ.əl ˈskɔː.rər/
UK /əˌfɪʃ.əl ˈskɔː.rər/
"official scorer" picture
1.

In baseball, a person appointed to record the details of a game, including hits, errors, and other statistics, and to make decisions on plays that are not clearly defined by the rules.

:
The official scorer ruled the play a single, not an error.
Fans often debate the decisions made by the official scorer.