Crossword Genius

A little secretive about choice of openers for Headingley Test (7)

Ross

I believe the answer is:

shortly

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

'choice of openers for headingley test' is the definition.
I can't judge whether this definition defines the answer.

'a little secretive about' is the wordplay.
'a little' becomes 'hort' (I can't explain this - if you can you should give a lot more credence to this answer).
'secretive' becomes 'sly' (I've seen this in other clues).
'about' is an insertion indicator.
'hort' inserted inside 'sly' is 'SHORTLY'.

Can you help me to learn more?

(Other definitions for shortly that I've seen before include "In a jiffy" , "Soon: in an abbreviated manner" , "Soon; sharply" .)

I've seen this clue in The Telegraph.
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