A way to point out that one is the better boxer (8)

I believe the answer is:

outpoint

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'one is the better boxer' is the definition.
I can't judge whether this defines the answer.

'a way to point out' is the wordplay.
'point out' anagrams to 'OUTPOINT'.
However, I am unsure how the anagram is indicated.

'that' is the link.

Can you help me to learn more?

(Another definition for outpoint that I've seen is " Score more".)

I've seen this clue in the Evening Standard.

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