Crossword Genius

Added recommendation for a jockey (5)

Ross

I believe the answer is:

rider

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

This clue could be a double definition.

'added recommendation' is the first definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe there's an association between them I don't understand?

'for a jockey' is the second definition.
(horse rider)

Can you help me to learn more?

(Other definitions for rider that I've seen before include "Equestrian or biker?" , "Possibly cavalier" , "Supplementary clause" , "Additional bit" , "Supplement to verdict" .)

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