Crossword Genius

Review knockout that's a surprise after fair punch (5,4)

Ross

I believe the answer is:

right hook

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'review knockout that's a surprise' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'after fair punch' is the wordplay.
'after' is a charade indicator (letters next to each other).
'fair' becomes 'right'.
'punch' becomes 'hook' (type of punch in boxing).
'right'+'hook' is 'RIGHT HOOK'.

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