Disallowed remaining game, then went in front (9)
I believe the answer is:
overruled
'disallowed' is the definition.
(I've seen this before)
'remaining game then went in front' is the wordplay.
'remaining' becomes 'over' (as in 'we ate them all but had one over').
'game' becomes 'ru' (rugby union).
'then' is a charade indicator (letters next to each other).
'went in front' becomes 'led'.
'over'+'ru'+'led'='OVERRULED'
(Other definitions for overruled that I've seen before include "Disallowed by exercising one's authority" , "Forced to change a decision" , "Reversed decision of" , "Cancelled" , "Countermanded" .)