Possible Clues:

• They're what you get during 4 down, but not the kind you need for 35 across in circles
• O! O! They'll get fired
• Circuits of the golf course
• Of golf, of drinks
• Doctors make them in hospitals
• Routes for deliverers
• One might make nothing of them off the loaf
• Rings in the ring
• Boxing match divisions
• Golf games