Crossword Genius

Info obtained from small markings on the skin (5)

Ross

I believe the answer is:

stats

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

'info obtained from small markings' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'on the skin' is the wordplay.
I cannot quite see how this works, but
'on' could be 'at' (I've seen this in other clues) and 'at' is located in the answer.
The remaining letters 'sts' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for stats that I've seen before include "Copies" , "information showing sporting performance?" .)

I've seen this clue in The Telegraph.
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