Try out striker in international game (4,5)
I believe the answer is:
test match
'international game' is the definition.
(I've seen this before)
'try out striker' is the wordplay.
'try out' becomes 'test' ('test' can be a synonym of 'try out').
'striker' becomes 'match' (a match can be struck).
'test'+'match'='TEST MATCH'
'in' acts as a link.
(Other definitions for test match that I've seen before include "International game" , "International sports event" , "14 [NATIONAL] team meeting" , "Cricket contest between countries, usually one of a series" , "Strike a light!" .)