It was Amakhosi's third straight defeat on their pre-season tour of the Netherlands.
They first lost 2-1 to Vitesse before succumbing to a 4-0 defeat to Utrecht on Friday.
That means Nasreddine Nasbi's men have conceded seven goals in three games while finding the back of the net just once.
This could be an indicator of attacking frailties, something that has been haunting them in recent seasons.