Darling ready for run of four aces, perhaps? (4,4)
I believe the answer is:
love game
'run of four aces perhaps?' is the definition.
I can't tell whether this defines the answer.
'darling ready' is the wordplay.
'darling' becomes 'love' (both are terms of endearment).
'ready' becomes 'game' (I can't justify this - if you can you should give a lot more credence to this answer).
'love'+'game'='LOVE GAME'
'for' acts as a link.
Can you help me to learn more?
(Another definition for love game that I've seen is " (Tennis) play in which the loser gets no score".)