Spinner celebrates best Test result (3,5)

I believe the answer is:

top marks

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'best test result' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'spinner celebrates' is the wordplay.
'spinner' becomes 'top' (a spinning top).
'celebrates' becomes 'marks' (as in marking an anniversary).
'top'+'marks'='TOP MARKS'

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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