Support clubs to do the same (6,4)
I believe the answer is:
follow suit
'do the same' is the definition.
I can't judge whether this definition defines the answer.
'support clubs' is the wordplay.
'support' becomes 'follow' (I can't justify this - if you can you should give a lot more credence to this answer).
'clubs' becomes 'suit' (clubs is an example of a card suit).
'follow'+'suit'='FOLLOW SUIT'
'to' is the link.
Can you help me to learn more?
(Other definitions for follow suit that I've seen before include "Play another club, perhaps" , "Do as others do" , "go from club to club" , "in due course" , "Do the same as someone else" .)