Relish circuit before winning (3,2)
I believe the answer is:
lap up
'relish' is the definition.
(I've seen this in another clue)
'circuit before winning' is the wordplay.
'circuit' becomes 'lap' (synonyms).
'before' says to put letters next to each other.
'winning' becomes 'up' (I've seen this in other clues).
'lap'+'up'='LAP UP'
(Other definitions for lap up that I've seen before include "Accept eagerly" , "Delight" , "of future monarch?" , "Assimilate with relish" , "Scoop" .)