Related Clues:

• Champagne quantity
• Tricky bowling situation
• Took one's leave, slangily
• Fork
• Divide, in a way
• Breakup
• Champagne portion
• Kegler's headache
• Gymnastic maneuver
• Alley oops?
• What 51-Across did in the '70s, for Los Angeles
• Cut halfway through
• Cut a sandwich, say
• Trouble for a bowler
• Alley 'oops'?