Professionally, a good match (7)

I believe the answer is:

benefit

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'professionally a' is the definition.
I can't tell whether this definition defines the answer.

'good match' is the wordplay.
'good' becomes 'bene' (I am not sure about this - if you are sure you should believe this answer much more).
'match' becomes 'fit' (synonyms).
'bene'+'fit'='BENEFIT'

Can you help me to learn more?

(Other definitions for benefit that I've seen before include "Handout" , "Payment" , "Fine bet (anag)" , "(Gain) advantage" , "Advantage or profit gained from something" .)

I've seen this clue in the Evening Standard.

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