Lancashire Lightning moved top of the Friends Life t20 North Group with a 25-run win at Emirates Old Trafford, over Durham Dynamos who later went bottom when Yorkshire Vikings won.
Karl Brown hit a career-best 62 off 42 balls and Kabir Ali claimed 3-30 as the Lightning made it three straight wins.
Scott Borthwick also returned a format-best 62 off 51, yet that was not enough for Durham to chase down Lancashire's 170 for five.
Brown opened the batting following an injury to Tom Smith and took the attack to Durham from the off after Lancashire won the toss. Having been dropped by Ryan Pringle off Will Smith at backward point on 37, he posted a second half-century this season off 36 balls.
Brown hit nine fours and a six as he shared in an 85-run opening stand with Stephen Moore before being caught at long-on off Gareth Breese.
Moore quickly followed to Borthwick for a run-a-ball 18. And Borthwick, who finished with 2-26, soon picked up Steven Croft, who was also caught by Michael Richardson.
Simon Katich got Lancashire's innings back on track as he continued his impressive form with the bat, sharing a 39-run partnership in 23 balls with Ashwell Prince before the South African was caught on 17 by Ben Stokes to become Chris Rushworth's first victim.
But the former Australia Test player went on to finish not out on 40 off 30 balls, with Gareth Cross hitting 14 from just seven before he was out off the final ball of the innings, caught by Gordon Muchall off Rushworth.
Lancashire made an early breakthrough thanks to a stunning one-handed diving catch by Simon Kerrigan at mid-on to dismiss Mark Stoneman off Kabir for seven in the third over.
And Kabir struck again when Phil Mustard was caught at midwicket by Prince for 24 to leave Durham 36 for two.
Smith was next to go as he was taken at long-on by Croft off Arron Lilley and - when Stokes was snaffled by the same man, this time off Kerrigan - Durham were 98 for four in the 15th.
Borthwick kept their fading hopes alive, only to be caught by Brown with nine balls to go as Kabir claimed his third wicket to wrap up the points.