Will he be too quick for Aussies to observe ball? (4,4)

I believe the answer is:

mark wood

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

'will he be too quick for aussies to observe' is the wordplay.
I cannot really see how this works, but
'he' could be 'wood' and 'wood' is found within the answer.
'observe' could be 'mark' (marking is a kind of observing) and 'mark' is present in the answer.
No letters remain.
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 Telegraph.

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