Sports clubs' dances hard hit by rackets, perhaps (6-5)

I believe the answer is:

tennis-balls

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'hard hit by rackets perhaps' is the definition.
I can't judge whether this definition defines the answer.

'sports clubs' dances' is the wordplay.
'sports clubs'' becomes 'tennis' (I am not sure about this - if you are sure you should believe this answer much more).
'dances' becomes 'balls' (ball is a kind of dance).
'tennis'+'balls'='TENNIS BALLS'

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I've seen this clue in The Irish News.

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