On Saturday in Christchurch, the Sparks beat Canterbury by 20 runs in a one-day match, and then yesterday in the second twenty/20 match of the weekend, it won by 13 runs, again over Canterbury.
The side had lost the opening twenty/20 match on Friday night by 14 runs.
Victory on Saturday meant Otago would have made the final of the one-day competition if Wellington lost to Central Districts.
But that was not looking likely as soon as Wellington scored nearly 300 when it batted in Palmerston North.
Central Districts, which has failed to fire this season, could only manage 187 in reply and that was the end of Otago's hopes.
Otago finished in third place in the one-day competition and did have the satisfaction of knocking over the top qualifier, Canterbury, on Saturday.
Otago was sent in to bat on Saturday and set the win up with a century opening stand by Katey Martin and Kylie Crowley.
They brought up the 100-run stand in the 22nd over and though both departed shortly afterwards, the base had been set.
Suzie Bates chipped in with 41, and if anything Otago should have scored more but it lost too many wickets at the end of the innings, eventually reaching 215 all out.
In reply, Canterbury was within the run rate early on but lost four quick wickets within 22 runs in the middle order and that put Otago in the box seat.
Leg spinner Emma Campbell, who had an injury-disrupted start to the season, bowled well to take three wickets and concede just 25 runs from her 10 overs.
A couple of run outs also aided the Otago cause, especially getting rid of top scorer Hayley Jensen.
The Otago Daily Times understands that Clare Taylor, who picked up two wickets at the end to seal the win for Otago, was playing her last game for Otago.
Yesterday, Otago batted first again in the shorter version of the game, and rode on the back of Bates to win.
The double international opened the innings and batted through to score an undefeated 67 in an innings of 114, hitting six boundaries.
The next highest score was 16, as Bates faced more than half the balls bowled.
Tanya Morrison opened the bowling for Otago and had a wicket in the first over and bowled four overs costing just nine runs, but Bates was the undoubted star as she took a rare five-wicket bag, for just 15 runs.
She ran right through the Canterbury middle order and once Janet Brehaut was out for 40, the Canterbury challenge quickly folded.
Canterbury, though, did enough to make the final of the twenty/20 competition, while Otago finished fourth with 20 points.
Wellington was top qualifier with 34 points and will meet Canterbury in both the one-day and twenty/20 finals over the next two weekends.
