Courtyard without a pitch limits success (7)
I believe the answer is:
triumph
'success' is the definition.
(I know that success can be written as triumph)
'courtyard without a pitch limits' is the wordplay.
'courtyard' becomes 'atrium' (atrium is a kind of courtyard).
'without' suggests deleting specific letters.
'pitch limits' becomes 'ph' (I can't explain this - if you can you should give a lot more credence to this answer).
'atrium' with 'a' taken away is 'trium'.
'trium'+'ph'='TRIUMPH'
Can you help me to learn more?
(Other definitions for triumph that I've seen before include "Exult in victory" , "former car manufacturer" , "The exultation of victory" , "Successful ending of a struggle or contest" , "beat the opposition!" .)