Supporter of triumphant Wimbledon winner removing top? (8)

I believe the answer is:

upholder

'supporter' is the definition.
(I know that upholder is a type of supporter)

'triumphant wimbledon winner removing top?' is the wordplay.
'triumphant wimbledon winner' becomes 'cupholder' (someone who won a cup).
'removing top?' means to remove the first letter (I've seen 'removes top' mean this).
'cupholder' with its initial letter taken off is 'UPHOLDER'.

'of' acts as a link.

I've seen this clue in The Guardian.

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