Support trophy, drunk before ride (7,3)

I believe the answer is:

stirrup cup

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'drunk before ride' is the definition.
I can't judge whether this definition defines the answer.

'support trophy' is the wordplay.
'support' becomes 'stirrup' (support for a horse rider's foot).
'trophy' becomes 'cup' (cup is a kind of trophy).
'stirrup'+'cup'='STIRRUP-CUP'

Can you help me to learn more?

(Other definitions for stirrup cup that I've seen before include "'One for the Ride'" , "Drink offered to huntsman" , "last drink!" , "Rider's setting-off drink" , "Leaving drink" .)

I've seen this clue in The Daily Express.

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