Finished as a maiden, perhaps? (4)
I believe the answer is:
over
I believe this clue is a double definition.
'finished as' is the first definition.
(I've seen this before)
'a maiden perhaps?' is the second definition.
(maiden is a kind of over)
(Other definitions for over that I've seen before include "Having gone < to America" , "The delivery is concluded" , "Accomplished" , "Six consecutive bowls in cricket" , "superior position" .)