Related Clues:

• Invites the public
• Plays before the main act
• Goes on first
• Formally begins
• Bids 'one club'
• Parts, as a curtain
• Uses a slim jim
• U.S., French and Australian tournaments
• Starts the season
• Unseals
• Begins on Broadway
• Uncorks, perhaps
• Pops the top
• Begins a Broadway run
• Takes the cover off