Advantage point in a number of games (5)
I believe the answer is:
asset
'advantage' is the definition.
(I've seen this before)
'point in a number of games' is the wordplay.
'point' becomes 's' (South).
'in' is an insertion indicator.
'number of games' becomes 'set' (I've seen this before).
'a'+'set'='aset'
's' going inside 'aset' is 'ASSET'.
(Other definitions for asset that I've seen before include "Holding" , "valuable sort" , "Item of property" , "Part of motor vehicle wheel" , "Something of value, worth having" .)