Those possibly played as one works? (7)
I believe the answer is:
studies
'one works?' is the definition.
('study' can be a synonym of 'work')
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for studies that I've seen before include "lessons" , "Work done to acquire learning" , "Applies the mind to learning" , "Scrutinises" , "Closely inspects; rooms" .)