Crossword Genius

Retain what might have been won (3)

Ross

I believe the answer is:

own

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

'retain' is the definition.
(I've seen this in another clue)

'might have been won' is the wordplay.
'won' can be anagrammed to 'OWN'.
However, I am not sure how this is indicated.

'what' is the link.

Can you help me to learn more?

(Other definitions for own that I've seen before include "Posses" , "Personal; possess" , "Possess - recognise - admit" , "Allow" , "Be in legal possession of (3)" .)

I've seen this clue in the Evening Standard.
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