Related Clues:
- Foul ball callers
- 'Out' sources?
- Diamond pros
- National Pro Fastpitch officials
- Callers of balls and strikes
- ''Fault'' callers
- Dodgers game officials, briefly
- Keeps track of a count, maybe
- Rules on plays
- Ones usually found at home
- Strike zone-watching refs
- Officials calling strikes
- Home plate officials, informally
- Rules on fouls
- Crew of four on a baseball diamond