Strange boy has better than even chances (6)

I believe the answer is:

oddson

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'better than even chances' is the definition.
I know nothing about this answer so I can't tell whether this works.

'strange boy' is the wordplay.
'strange' becomes 'odd' (I've seen this in another clue).
'boy' becomes 'son' (synonyms).
'odd'+'son'='ODDSON'

'has' is the link.

Can you help me to learn more?

I've seen this clue in The Irish Independent.

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