Foreign article about position of golfer’s ball (5)
I believe the answer is:
alien
'foreign' is the definition.
('alien' can be a synonym of 'foreign')
'article about position of golfer's ball' is the wordplay.
'article' becomes 'an' (indefinite article).
'about' means one lot of letters goes inside another.
'position of golfer's ball' becomes 'lie' (position at which a golf ball stops).
'an' going around 'lie' is 'ALIEN'.
(Other definitions for alien that I've seen before include "24a [ESTRANGE]" , "Foreign - film directed by Ridley Scott" , "coming from overseas" , "Foreign, strange" , "Creature from another planet" .)