A decisive performance with bat and ball from Chris Green helped Lancashire defeat Durham in a top of the table clash in Manchester.
Figures of 3-15 off his four overs from the Australian all-rounder helped restrict Durham to 156-7, with Colin Ackerman top scoring for the visitors with 42.
The Red Rose started the powerplay strongly with opener Keaton Jennings making 42 but when he fell with the score on 107-4, the hosts wobbled and then lost Michael Jones and Jack Blatherwick without scoring.
However, Green’s assured cameo settled home fans nerves and his second six of his innings meant he ended on 31 not out as the Red Rose reached 156-7 and went top – they could confirm their final eight spot with a victory at Yorkshire next week.
Worcestershire leapfrogged Leicestershire with a six-wicket win at New Road.
The Foxes won the toss and elected to bat first but were 5-2 in the second over following the early dismissals of Rishi Patel and Shan Masood.
Ben Cox (70 not out off 44 balls) steadied the ship and they reached the end of the innings with 173-6 on the board.
Worcestershire got off to a flier in their reply, reaching 50-0 in the fifth over and Ethan Brookes’ 56 not out off just 28 balls, which included five sixes, helped the hosts secure a comfortable victory on 176-4 with 13 balls still remaining.
Northamptonshire went up to second in the North Group with an impressive victory against fellow quarter-final hopefuls Bears.
On a batter-friendly pitch at Edgbaston, Breetzke backed up his superb 93 against Derbyshire on Friday with a dazzling 40-ball knock containing six sixes, to help the Steelbacks post 240-6.
In reply, Bears lost Alex Davies and Dan Mousley early on and despite Sam Hain’s 50 off 29 balls providing some resistance, the hosts were bowled out still 65 runs short of their target.
In the day’s other game, Derbyshire dismantled Yorkshire at Headingley in a clash between the North Group’s bottom two clubs.
A five-wicket haul from seamer Ben Aitchison, 2-36 from Zak Chappell and 2-5 from Mohammad Ghazanfar, who sent down 20 dot balls, saw the White Rose limited to 151-9, Dom Bess top scoring with 53.
Yorkshire opener Jonny Bairstow followed his century on Friday with a five-ball duck, bowled by 19-year-old Afghan off-spinner Ghazanfar.
Derbyshire, whose hopes of reaching the knockout stages have already gone, chased down their target easily with Aneurin Donald and Wayne Madsen bringing up half centuries.
