Crossword Genius

Potentially giving casino a run? (7,3,5,8)

Ross

I believe the answer is:

playing for sheep stations

I'm a little stuck... Click here to teach me more about this clue!

'potentially giving casino a run?' is the definition.
I can't judge whether this definition defines the answer.

'giving casino a run?' is the wordplay.
I cannot really understand how this works, but
'a' is present in the answer.
'giving' could be 'plying' (plying is a kind of giving) and 'plying' is found in the remaining letters.
'run?' could be 'r' (cricket abbreviation) and 'r' is found within the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

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