Possible Clues:

• None of them's an all-rounder, though there can be an all-rounder at one of them
• Racing forms?
• Certain driveways
• Circuits for 55-Across
• Shapes formed by spotlights
• Track shapes, usually
• Description of more than one at start of 3 down is around at Valerie's
• Cricket fields and badminton racket heads, for two
• Cricket fields, e.g
• Zeros' shapes