Lancashire Lightning bowled Birmingham Bears out for 111 to take a 15-run victory and maintain their lead at the top of the North Group standings.
The home side were dismissed for 126 with a ball to spare as Tom Smith led the way with 44.
Birmingham looked to have started their reply well as they chased 127 for victory, but Stephen Parry wiped out the top order before Junaid Khan ripped through the middle order, the latter finishing with figures of 4-12.
Meanwhile, Hampshire secured an eight-wicket win over Essex Eagles to remain at the top of the South Group standings.
Ben Foakes was the top scorer for Essex as the visitors reached 145 runs off their 20 overs.
The hosts made a poor start to their innings, as Michael Carberry was out for a duck to leave the side 0-1, but Owais Shah and James Vince both reached half-centuries to help Hampshire to victory.
Nottinghamshire Outlaws came up just short in their match against Durham Jets, losing by three runs as they chased 133 for victory.
Gordon Muchall led the charge for the visitors, but Steven Mullaney prevented them from posting a big score, claiming four wickets for 25 runs.
Chris Rushworth claimed a couple of early wickets to reduce Nottinghamshire to 24-3 in their reply, leaving the middle order with too much to do.
Yorkshire Vikings eased to an eight-wicket win over Derbyshire Falcons with six overs to spare to seal their first win of the campaign.
The visitors batted first, with Wayne Madsen and Gareth Cross the only batsmen adding more the 20 runs as they were held to 127-6.
Yorkshire captain Andrew Gale was caught out for just seven, but Alex Lees and Johnny Bairstow ensured that the hosts comfortably reached their target.
Kent Spitfires maintained their unbeaten start to the competition with a 21-run win over Gloucestershire.
The hosts were reduced to 63-4, but a knock of 41 from Alex Blake helped Kent set the visitors a target of 137 for the win.
However, Adam Riley picked up 4-22 with the ball to ensure that the visitors fell short of the total.
Richard Oliver led Worcestershire Rapids to a five-wicket win over Northamptonshire with a knock of 77.
Having been set a target of 135 for victory, Worcestershire's openers made a strong start to their innings, making 87 before Moeen Ali was dismissed.
Oliver went on to reach 77 off 43 balls before being bowled out, then Ross Whiteley hit the winning runs with over five overs to spare.
Glamorgan clinched a five-wicket win over Sussex Sharks with the final ball of the match.
Ed Joyce and Matt Pryor led Sussex to a total of 178 in their 20 overs, but the home side managed to pass their score.
Jacques Rudolph and Chris Cooke both claimed half-centuries before Darren Sammy hit the winning runs on his debut for the team.
Middlesex Panthers' poor start to the season continued as the side suffered a six-wicket defeat at the hands of Surrey.
Dawis Malan scored 48 off 51 balls as Middlesex set the visitors a target of 118 for victory.
In reply, Hashim Amla led the Surrey scoring, finishing with 39 runs as the visitors reached their target with eight balls to spare.