Related Clues:

• Like an unresolved question
• Warmer attack
• Start (with)
• '___ Water' (Caleb Azumah Nelson book)
• 'I'm an ___ book!'
• The competition allows both professional and amateur competitors
• Perform before a headlining band
• Sporting event for both profess­ionals and amateurs together
• Word before "house" or "bar"
• In basketball, unguarded
• Willing to listen (to)
• Calendar slot status
• Old writer not afraid to call a spade a spade
• 17 across, composer appearing in month — where reason for being late remains unknown?
• Frank adaptation? Nope!