Court decision offering only opening for club (4)
I believe the answer is:
wood
'only opening for club' is the definition.
'wood' can be an answer for 'club' (wood is a kind of club). I am not sure about the 'only opening for' bit.
'court decision' is the wordplay.
'court' becomes 'woo' (both can mean to romance someone).
'decision' becomes 'd' (this might be a standard abbreviation I've not previously seen).
'woo'+'d'='WOOD'
'offering' acts as a link.
Can you help me to learn more?
(Other definitions for wood that I've seen before include "What you might need to play golf" , "Old conductor" , "Forest - golf club - biased bowl" , "Wind instrument - golf club" , "celebrated conductor" .)