Man to run out victor (4)
I believe the answer is:
hero
'victor' is the definition.
(thesaurus)
'man to run out' is the wordplay.
'man' becomes 'he' (**).
'to run out' becomes 'ro' (cricket abbreviation).
'he'+'ro'='HERO'
(Other definitions for hero that I've seen before include "Leander's lover - a person of courage" , "Person distinguished by exceptional courage" , "Lamp-lighting lover" , "Male protagonist" , "Lover of Leander" .)