Related Clues:
- Home plate figures, informally
- Ones calling the shots?
- "Zebras," in sports slang
- Half fare, initially for Sunday match officials
- Umps' cousins
- Frequent targets of fan heckling
- Gridiron officials, in brief
- Field laborers
- Striped officials, familiarly
- They run with basketball players
- Masked men in parks
- NHL officials
- Works at the ballpark, maybe
- Bout arbiters
- They can call you out