Not really set out when golf tournament finished (4-5)
I believe the answer is:
open-ended
'not really set out' is the definition.
Both the definition and answer are adjectives. Perhaps you can see a link between them that I can't see?
'golf tournament finished' is the wordplay.
'golf tournament' becomes 'open' (the Open is a golf tournament).
'finished' becomes 'ended' ('end' can be a synonym of 'finish').
'open'+'ended'='OPEN-ENDED'
'when' is the link.
Can you help me to learn more?
(Other definitions for open-ended that I've seen before include "With no fixed limit, not circumscribed" , "Allowing free debate with no set time to finish." , "Having no fixed limit, perhaps a discussion" , "Without fixed limits or restrictions" , "Having no predetermined limit" .)