Related Clues:

• Three's opposite on a clock face
• Workday start for many
• It's a square
• Fine diving score
• Works at home?
• Balls-and-strikes callers
• Play watchers?
• Ball with a yellow stripe
• Blissful cloud
• On cloud --
• ''No catch'' signalers
• Number of men in a lineup
• Baseball team
• Tennis arbiters
• Officials who cry 'Yer out!'