After Jordy Buijs scored a penalty to put NAC ahead, the 19-year old Brazilian responded with one of his own, smashing the ball into the top corner from the spot.
Five minutes into the second half, Piazon doubled his tally when he finished off a slick Vitesse move to slide the ball past NAC keeper Jelle Ten Rouwelaar and put his side in front.
The victory keeps Vitesse at the top of the Eredivisie table, two points ahead of closest challengers Ajax. Much of the team's success can be accounted for by Piazon who is quickly becoming the main talisman for Vitesse as his season goal tally moves to 10.
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