In reply, the Aces stuttered before their middle-order batsmen stopped the rot enough to overhaul their target.
"We had a few batters who had good starts but, unfortunately, no one kicked on to post a fair total to put us into a position for a competitive score," said Stags coach Heinrich Malan.
The game had a 20-minute delay in starting after dampness on part of the field due to dew overnight not evaporating fast enough because of the shade nearby trees were casting at the picturesque park.
Homeboy Tom Bruce was the top scorer for CD with 56 runs, while Doug Bracewell added 38.
Wicketkeeper Dane Cleaver was promoted to open the batting in the absence of Black Cap George Worker.
Auckland spinner Tarun Nethula claimed 4-64 but Malan didn't think the two-paced wicket provided purchase for tweakers and was a good batting strip.
"We just didn't play the way we wanted to and didn't build a structure around us in the first 30 overs to have wickets in hand," he lamented.
CD play the Northern Districts Knights at Cobham Oval, in Whangarei, on Wednesday before returning to Pukekura Park to host the Otago Volts on Sunday.