Win big article in exclusive table game (5,3,4)
I believe the answer is:
scoop the pool
'win big' is the definition.
'article in exclusive table game' is the wordplay.
'article' becomes 'the' (the 'definite article' part of speech).
'in' is an insertion indicator.
'exclusive' becomes 'scoop' (synonyms).
'table game' becomes 'pool' (pool is a kind of table game).
'scoop'+'pool'='scooppool'
'the' put inside 'scooppool' is 'SCOOP THE POOL'.
(Other definitions for scoop the pool that I've seen before include "Win everybody's stakes" , "Win a substantial amount of money" .)