Has no victories without the writer (4)
I believe the answer is:
owns
'has' is the definition.
('own' can be a synonym of 'have')
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for owns that I've seen before include "Has possession of by right" , "Confesses" , "Admits possession" , "Belongs to" , "uses" .)