Level in a race (4,3,4)
I believe the answer is:
neck and neck
'level in a race' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for neck and neck that I've seen before include "being close?" , "keep on canoodling" , "New lovers frequently do it" , "Absolutely level (in race)" , "Bill and coo" .)