Pair of wrestlers, game couple (3,4)
I believe the answer is:
tag team
'pair of wrestlers' is the definition.
(I've seen this before)
'game couple' is the wordplay.
'game' becomes 'tag' (I've seen this before).
'couple' becomes 'team'.
'tag'+'team'='TAG TEAM'
(Other definitions for tag team that I've seen before include "Pair of wrestlers fighting together" , "Pair of co-operating wrestlers" .)