Demonstrate in favour of cricket match (7)
I believe the answer is:
protest
'demonstrate' is the definition.
(I know that demonstrate is a more specific form of the action protest)
'in favour of cricket match' is the wordplay.
'in favour of' becomes 'pro' (being pro a particular cause).
'cricket match' becomes 'test' (a test is a kind of cricket match).
'pro'+'test'='PROTEST'
(Other definitions for protest that I've seen before include "Spotter of objection" , "Public demonstration" , "Demonstrate" , "Express opposition" , "Statement or action showing disapproval" .)