Court victor's appeal about case of homicide (4)
I believe the answer is:
ashe
'court victor's' is the definition.
(Arthur Ashe was a tennis player)
'appeal about case of homicide' is the wordplay.
'appeal' becomes 'SA' (old-fashioned abbreviation for sex appeal).
'about' shows that the letters should be reversed in order.
'case of' says to hollow out the word (remove centre letters) (outsides of).
'homicide' with its middle removed is 'he'.
'sa' in reverse letter order is 'as'.
'as'+'he'='ASHE'
(Other definitions for ashe that I've seen before include "US court star" , "He was good enough to win Wimbledon" , "Arthur, who came to court" , "tennis champ" , "US rallying champion" .)