Run scored in cricket over (5)
I believe the answer is:
extra
This clue is a double definition.
'run scored in cricket' is the first definition.
(type of run in cricket)
'over' is the second definition.
(extra can mean left over)
(Other definitions for extra that I've seen before include "Additional or supplementary" , "One in crowd scene" , "redundant > spear-carrier" , "someone in a crowd scene" , "entry on scorecard?" .)