A cup wrestled for in Derry? (5)

I believe the answer is:

ryder

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'a cup' is the definition.
Both the answer and definition are singular nouns.
Maybe there's a link between them I don't understand?

'wrestled for in derry?' is the wordplay.
'derry' can be anagrammed to 'RYDER'.
However, I'm not clear how the anagram is indicated.

Can you help me to learn more?

(Other definitions for ryder that I've seen before include "The . . . . . Cup - international golf tournament won by Europe 2006" , "-- Cup, golf trophy" , "-- Cup, biennial golf tournament" , "sporting contest" .)

I've seen this clue in the Evening Standard.

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