Crossword Genius

Promoter of mixed doubles? (10)

Ross

I believe the answer is:

matchmaker

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'promoter of mixed doubles?' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see an association between them that I don't see?

This is all the clue.

Can you help me to learn more?

(Other definitions for matchmaker that I've seen before include "worker responsible for strikers leaving the factory?" , "Cupid" , "Union organiser" , "One seeking to bring couples together" , "One who arranges marriages for others" .)

I've seen this clue in The Globe and Mail.
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