The Sparks were dismissed for a modest 85 and Canterbury cruised to an eight-wicket win with more than five overs to spare.
The visitors were without key all-rounder Suzie Bates and overseas player Natasha Miles. Both players picked up groin strains in the earlier twenty/20 match on Saturday.
Katey Martin did her best to hold Otago's innings together with 44 from 41 deliveries. But she had precious little support from the rest of the line-up. The only other player to reach double figures for Otago was the much-improved Victoria Abbott with 10.
Frankie Mackay whacked 46 from 45 deliveries to guide her side to a comprehensive victory.
The loss capped a disappointing season in which Otago won just one of its 10 twenty/20 games and one of its five one-day matches.
A poor return but Sparks coach Nathan King said his side was very much in a rebuilding phase after the retirements of experienced duo Clare Taylor and Sarah Tsukigawa at the end of last season.
Leg-spinner Emma Campbell also to decided to take an indefinite break from the game.
There was more bad news yesterday with spinner Tanya Morrison deciding to call it quits after almost a decade in the blue and gold.
Morrison played 65 one-day games and 28 twenty/20 matches for Otago since making her debut in 2002/03. She took 54 one-day wickets at an average of 29.55 and grabbed 18 wickets in twenty/20 cricket at 28.16.
"She wants to end this chapter of her life and move on to other things," King said.
"She has certainly contributed a hell of a lot. It is another massive loss for us. Things are not getting any easier when you look ahead to next season."
Understandably, depth was an issue this summer and will remain so for the next two or three years as the next group of players comes through.
"It was always going to be tough this season, there is no doubt about that," King said.
"Some individuals have improved but, at the end of the day, we could never really string all three facets of the game together. That was our biggest problem.
"We probably struggled the most in the bowling department. A lot of the new girls in the team were asked to bowl the majority of overs and that proved tough.
Otago is heavily reliant on its White Ferns duo of Martin and Bates. When they do well, Otago does well.
The Sparks' two wins both came against Central Districts. It beat Central by 21 runs in a twenty/20 game with Bates and Martin combining in 106-run opening stand. Bates also took two for 19 with the ball to help seal the victory.
The one-day win was by the narrowest of margins - one run.
Martin top-scored with 90 from 117 deliveries.
"I think we have done some really good things in the last couple of years [to address a lack of depth]. We've got a club competition up and running and have some good coaching programmes in place.
"Hopefully, we'll see the outcome of that in a few years' time. The thing is we have a bit of a gap at the moment and it is not easy to bridge that gap. It is a long-term project unfortunately."
One player who might help lift Otago's fortunes is Victoria Abbott. It is her third year in the Sparks and she had somewhat of a breakthrough season.
"She has not had a lot of opportunities in the past two seasons because of the strength on the team. But she is a natural athlete and is very good at a number of different sports. She batted and bowled really well and made some great contributions."
