Championship contenders Scott McLaughlin and Shane Van Gisbergen have both been whacked by Supercars officials after their Sydney Motorsport Park dust-up.
Both have been served 33-second penalties - the equivalent of pit-lane penalties - after brawling in Saturday's race.
And both saw their standings in the Supercars championship suffer as a result of new race results, to be confirmed by stewards on Sunday.
The pair were battling for the race lead in Sydney at a race restart after Todd Kelly's tyre blowout.
Van Gisbergen overstepped the mark as the safety car left the track, drawing level with his Kiwi rival and jumping the gun with an audacious overtaking move.