Result of winning stroke (6)
I believe the answer is:
upshot
'result' is the definition.
(synonyms)
'winning stroke' is the wordplay.
'winning' becomes 'up' (I've seen this in other clues).
'stroke' becomes 'shot' (shot is a kind of stroke).
'up'+'shot'='UPSHOT'
'of' is the link.
(Other definitions for upshot that I've seen before include "increased exposure" , "issue" , "Outcome, final result" , "Outcome of vertical discharge?" , "skier" .)