The Kings batted first and were dismissed for 204 in the final over of the innings.
Three of Kai's top order contributed well to the total before captain Mark Shepherd came to the crease with the score at 83.
Shepherd hit 12 fours and a six to guide his side past 200.
The tail managed to stay around while Shepherd, who hit 73, was scoring runs.
Opening batsman Greg Webber (40) and fellow top order batsmen William Casey (28) and Tony Phillips (27) were the other high scorers.
Marc Phillips took four for 37 off his eight overs. Tony Omelvena and Bevan McCall took two wickets each.
In reply the Stingers were bowled out for 172 in the 39th over.
Bevan McCall (14) was the only batsman in the top five to make double figures, as Valley experienced an uncharacteristic top-order collapse.
Daniel Cragg (28) played positively and tried to increase the run rate.
Phillips batted nicely with the tail, but he was left with too much work to do.
He was dismissed for 51 with more than 30 runs required.
Shepherd continued his strong individual day by taking five wickets for 25 runs off seven overs. The Kai bowling innings was set up nicely by a very sharp opening spell of bowling from veterans Webber (two for 29) and Jason Young (two for 22).
The Owaka Bandits had a comfortable four-wicket win over the Clutha Comets at Owaka.
The Comets won the toss, batted first and were bowled out for 146 in the 30th over.
Opener Michael White hit a swift 30 to start his side off well.
Darren Baucke held up the middle of the innings with a well-struck 41 before Rhiane Smith (22) hit some key runs down the bottom of the order.
Jeremy Gray took season-best figures of four for 29 off seven overs and was making the ball hoop around corners. Tony Miller and Colin Sparey took three wickets each.
In reply the Bandits chased the total down in the 20th over, largely thanks to a 68-run partnership between Colin Sparey and Francis Parker.
Sparey was in devastating form yet again, hitting 63 runs off 31 deliveries to take control of the partnership. Once Sparey was dismissed the Bandits' middle order wobbled but a calm head from Steve Clarke (21 not out) saw them home comfortably.
Opening bowler Kelan Smith bowled a very tidy spell at the top of the innings. Morgan Lindsay, who took two for 15, and Connor Smith, who grabbed two for 17, returned the best figures for the losing Comets side.
The Waihola Swans had a five-wicket win over the Lawrence Lions in Lawrence.
The home side batted first and was dismissed for 120 in the 28th over.
Only one of the Lions' top six made double figures, which proved costly.
Some lower-order hitting from Sam Young (45) and 29 extras helped Lawrence set a tricky total but one that Waihola would have been confident of chasing.
James MacLean was the star with the ball for the Swans. He took four for 34 off eight overs. Braden Adams took three wickets and captain Dylan Bungard bowled well at the top with one for six off five overs.
In reply, the Swans took 35 overs to chase the total down, thanks largely to a fine unbeaten knock of 64 from Tim Grant.
Waihola was in trouble early at 10 for four before Grant joined Kellan Crowie.
The two put on a partnership just shy of 110 to take the game away from the home side.
Grant hit two fours and four sixes in his knock.
Lawrence skipper Sam Wyber took three wickets for 10 runs off his eight overs and has been consistently Lawrence's best all year.
The Waihola Swans will host the Clutha Comets in Milton and the Owaka Bandits will host the Kai Kings at Owaka in next week's semifinals.
- Francis Parker
