Possible Clues:

• They might be used to keep one on course or in the fire
• Presses for instruments of restraint
• On the course or in the fire
• On the 9 across or in the fire
• See 37-Down
• Golf bag collection
• Of course one may have some in the fire
• In Rio, on us the odds are evens
• In the fire but not on the drive, of course
• It is so flattening if one does it to the ends of 21 across