Check suit, where kit should be white (4,5)
I believe the answer is:
test match
'where kit should be white' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'check suit' is the wordplay.
'check' becomes 'test' (as in testing or checking something works).
'suit' becomes 'match' (both can mean to go together).
'test'+'match'='TEST MATCH'
Can you help me to learn more?
(Other definitions for test match that I've seen before include "International contest" , "Big game in India?" , "sporting event" , "Lord's international?" , "International affair" .)