Related Clues:

• Elongated O's
• Spaces for races
• Cartouches
• Most of a million?
• Squashed circles
• It's nice when prize winnings come with lots of these
• Squashed O's
• Not perfect circles
• Most cricket grounds
• Racetracks
• Near circles
• Egg outlines
• Losers
• Milers' tracks
• Picture frames lacking corners