US city open final: Barty versus unwell second seed (9)

I believe the answer is:

nashville

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

'us city' is the definition.
(I've seen this before)

'open final barty versus unwell second seed' is the wordplay.
'final' says to take the final letters.
'barty' becomes 'ash' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'versus' becomes 'v'.
'unwell' becomes 'i'll' (similar in meaning).
'second seed' becomes 'e' (snd letter of 'seed').
The final letter of 'open' is 'n'.
'n'+'ash'+'v'+'ill'+'e'='NASHVILLE'

Can you help me to learn more?

(Other definitions for nashville that I've seen before include "Where the Grand Ole Opry comes from" , "music centre" , "City in Tennessee" , "Centre of country and western" , "country town" .)

I've seen this clue in the Sydney Morning Herald.

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