Male divers still upsetting runner-up (6,9)

I believe the answer is:

silver medallist

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

'runner-up' is the definition.
Both the definition and answer are singular nouns.
Perhaps you can see an association between them that I can't see?

'male divers still upsetting' is the wordplay.
'upsetting' indicates anagramming the letters.
'male'+'divers'+'still'='malediversstill'
'malediversstill' anagrammed gives 'SILVER MEDALLIST'.

Can you help me to learn more?

(Other definitions for silver medallist that I've seen before include "Prizewinner" , "Athlete" .)

I've seen this clue in The Daily Express.

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