The hand Mark won in style (7)
I believe the answer is:
workman
'the hand' is the definition.
(I've seen this in another clue)
'mark won in style' is the wordplay.
'mark won' can be anagrammed to 'WORKMAN'.
But, I'm not clear how the anagram is indicated.
Can you help me to learn more?
(Other definitions for workman that I've seen before include "Artisan" , "Manual labourer" , "employee" .)