Ben Stokes scored 46 as Durham recovered from a poor start to beat Derbyshire by four wickets in their Friends Life t20 clash at Chesterfield.
The Dynamos looked to be heading for defeat when they were reduced to 36-4 in reply to the Falcons' 136-7, but Stokes and Gordon Muchall (37) turned the contest in the visitors' favour.
Although both fell to Wes Durston in the 16th over, it was too late for a Derbyshire side who have now lost their last four matches in the North Group.
Derbyshire also recovered from a shaky start as Durston was needlessly run out in the first over, with Dan Redfern (7) following when he chopped Will Smith onto his stumps.
But skipper Wayne Madsen and Chesney Hughes both launched sixes as the Falcons kicked on to reach 66-2 after 10 overs.
Hughes (32) was bowled swinging wildly at Chris Rushworth in the next over, and although Albie Morkel lifted the crowd by twice pulling Ryan Pringle for six, the off-spinner responded well by striking twice in the 15th over.
Morkel (25) saw his attempt at another big hit end in a skied catch to cover and Madsen was bowled for 32 trying to pull to leave Derbyshire on 100-5 after 15 overs.
Tom Poynton (15) drilled Pringle for a straight six but Derbyshire could not break free in the closing overs, although Durham's target looked much steeper when they lost four wickets cheaply.
Mark Stoneman was lbw sweeping at Peter Burgoyne for two, and although Phil Mustard pulled Morkel for successive fours, he was bowled for 18 trying to drive the next ball.
Durham's batsmen were struggling to get the ball away on a slow, turning pitch and after Scott Borthwick (3) was stumped off a wide ball from Tom Knight, Smith (12) was lbw to Redfern to leave the Dynamos spinning.
It needed something special to get Durham back in the contest and Stokes delivered by twice pulling Burgoyne for six, carving Mark Turner over the deep cover boundary and heaving Tim Groenewald high over midwicket for another maximum.
Muchall drove Turner for six over long on, and although Stokes holed out after driving Durston for his fifth six and Muchall also fell going for another big hit two balls later, Gareth Breese (8 not out) and Michael Richardson (8no) steered Durham to a victory that takes them above Derbyshire in the table.