After duck and double century a young man is accepting international opportunities (9)

'opportunities' is the definition.
(occasion is a kind of opportunity)

'after duck and double century a young man is accepting international' is the wordplay.
I cannot really see how this works, but
'duck' could be 'o' and 'o' is found in the answer.
'and' could be 'n' (common abbreviation for 'and') and 'n' is found in the answer.
'century' could be 'c' (common abbreviation) and 'c' is present in the answer.
'a' is found in the answer.
'man' could be 'si' and 'si' is present in the answer.
The remaining letters 'cos' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?