Crossword Genius

Australia’s opener inside crease, bowled by an unorthodox delivery (9)

Ross

I believe the answer is:

caesarean

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

'delivery' is the definition.
(caesarean is a kind of delivery)

'australia's opener inside crease bowled by an unorthodox' is the wordplay.
I cannot really see how this works, but
'an' could be 'a' and 'a' is present in the answer.
an anagram of 'crease' is 'cesare' which is within the remaining letters.
'australia' could be 'a' (abbreviation for Australia) and 'a' is present in the answer.
A single letter 'n' remains which might be clued in a way I don't see.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for caesarean that I've seen before include "Surgical operation to facilitate birth" , "Of Julius; a type of section" , "Arcane sea (anag.); obstetric operation" , "operational manoeuvre to effect delivery" , "How Macduff arrived" .)

I've seen this clue in The Hindu.
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