The Volts got into a healthy position in their match against Central Districts in Napier.
But the visiting side turned a 101-run first-innings lead into a six-wicket defeat. It is the association’s worst run in first-class cricket since the 2000-01 and 2001-02 teams strung together 10 straight losses.
Central was left chasing a modest target of 264 after Otago collapsed to be all out for 162 in its second innings.
"First of all, we should have got more," Walter said.
"To get bowled out for 160-odd was certainly the defining moment in the game.
"Wickets tended to fall in clumps with the Volts losing Derek de Boorder and Shawn Hicks, and then Mark Craig and Jimmy Neesham, when the players had got set and had established a partnership.
"Losing those wicket together like we did really set us back. I would have thought a lead of around 350 was what we would have needed."
Central Districts opener Greg Hay guided his side to victory with an unbeaten 134 from 269 balls. He batted for just under 6, while Stags captain Will Young (28 from 140 balls) was another player happy to occupy the crease and collect runs at glacial pace.
"We weren’t able to sustain the pressure mentally, from a batting point of view, for long enough.
"If I look at their second innings, I thought we bowled really well. But the thing that stands out for me was Hay and Young.
"They were prepared to bat and not score.
"In this instance, that is what was required in the game. They certainly showed some serious resilience through what was some seriously heated bowling spells.
"Neil [Wagner] bowled outstandingly well. Michael Rae bowled well. In my opinion our bowling was pretty good the whole game."It is just that they were able to soak up the pressure longer than we were.
"If the game requires that type of resilience, then we have to be able to step up and give it. That is something we just haven’t been able to nail this season."
Stags spinner Ajaz Patel picked up a five-wicket bag but Black Cap Adam Milne (two for 46) was "outstanding", Walter said.
"He didn’t give anything away and was able to bowl well for long periods."
Hicks top-scored for Otago in the second innings with 42 before he was run out at the non-striker’s end when Milne deflected a straight drive on to the stumps.
In the other game to conclude at the weekend, Auckland beat Northern Districts by 140 runs at Eden Park Outer Oval.
Seamer Matt McEwan picked up a hat-trick and a five-wicket bag in the first innings.
