Related Clues:

• Series starter
• First event in a series
• First game of the season
• Something to follow
• Key, e.g.
• Game one
• Show starter
• First game of a doubleheader
• Curtain raiser
• One who says 'one club,' e.g.
• First in a series
• First bid
• Eye or can follower
• Act before the headliner
• First of a series