From the time left-armer Ben Wheeler removed captain Rob Nicol and Anaru Kitchen for ducks in the opening over, Auckland were in a hole. Wheeler finished with four for eight off three impressive overs.
With Wellington having bounced back from their Friday night loss with wins over Canterbury, by 25 runs, and CD, by six wickets yesterday, they sit on 22 points, but with only one game remaining, against Otago.
Canterbury have 16 points, two more than Auckland, both having played seven games.
They clash at Christchurch on Thursday, and again in Napier two days later. Auckland finish their round robin against ND, also in Napier next Sunday.
ND, who played bottom side Otago in last night's later game, hold the whip hand for the top qualifying spot for the playoffs in Hamilton on December 5-7.
Points before last night's late game: ND 22 (7 games), Wellington 22 (9), Canterbury 16 (7), Auckland 14 (7), CD 10 (7), Otago 4 (7).