Winning reputation for being worthy (10)
I believe the answer is:
upstanding
'worthy' is the definition.
('upstanding' can be a synonym of 'worthy')
'winning reputation' is the wordplay.
'winning' becomes 'up' (I've seen this in other clues).
'reputation' becomes 'standing' (I've seen this before).
'up'+'standing'='UPSTANDING'
'for being' acts as a link.
(Other definitions for upstanding that I've seen before include "Honest, respectable; erect" , "Ready for toast" , "as we must be when the judge appears!" .)