In the second half, the visitors team had a few chances to take the lead but the task became harder when Verstraete was sent off with a straight red in the 72nd minute following a VAR review.
They did look to have scored a second when the ball went in the Newcastle goal in the 81st minute but it was off Tommy Smith’s lower arm and was disallowed.
Grozos had a chance to make up for his missed penalty with a free kick in the final minute of injury time but his shot went over the bar.
Auckland FC are six points clear of second-placed Western United with a game in hand and head home to host a Central Coast side next Sunday that has lost three straight.