Outcome requiring a snap judgement? (5,6)
I believe the answer is:
photo finish
'outcome' is the definition.
Both the definition and answer are singular nouns.
Perhaps there's a link between them I don't understand?
'a snap judgement?' is the wordplay.
'a snap' becomes 'photo' (I've seen this before).
'judgement?' becomes 'finish' (I can't explain this - if you can you should give a lot more credence to this answer).
'photo'+'finish'='PHOTO-FINISH'
'requiring' is the link.
Can you help me to learn more?
(Other definitions for photo finish that I've seen before include "Close ending to a race" , "Virtual dead heat in a horse race" .)