Related Clues:

• Side of an alley
• Tough spare
• Cheerleader's move
• Challenging bowling pin arrangement
• Divorce
• Word that can precede the first word of 17-, 23-, 38-, 47- and 59-Across
• Alley ''oops''
• Cleft
• Lane bane
• Bowler's problem
• Go 50/50 on
• Sluice
• Go separate ways
• Champagne bottle
• Bowling alley feature