Dumoulin provided an assist, two shots on goal, two hits and three blocked shots in Wednesday's 5-4 overtime win over Utah.
Dumoulin's first point as a Duck was a helper on Pavel Mintyukov's second-period tally. Those two blueliners have been paired together to start the season, though Dumoulin has far less scoring upside. He's added four shots on net, six hits and eight blocked shots over three contests in a third-pairing role.