A costly penultimate over from Liam Plunkett helped his former county Durham a four-wicket win against Yorkshire in the Friends Life t20 at Scarborough.
Durham looked down and out needing 82 runs off eight overs in their pursuit of 147, and even more so when they lost top-scorer Phil Mustard to Plunkett for 59 off 52 balls to leave the score at 110-5 after 16.5 overs.
But Gordon Muchall's 44 not out off 27 balls was crucial, including getting the lion's share of 16 off Plunkett in the 19th to take the equation from 25 off two overs to nine off the last.
Michael Richardson hit the winning runs off the penultimate ball of the match to seal Durham's first FLt20 victory of the season after an opening North Group loss to Lancashire, while last season's finalists Yorkshire have now lost their first two matches ahead of Friday's Roses clash at Headingley.
Plunkett hit a late 30 off 16 balls to boost Yorkshire's total to 146-7, which saw 39 runs come off the last three overs.
He then had Mustard caught at deep point at a crucial stage to end a fifth-wicket stand of 45 with Muchall.
But he conceded 14 runs off the first four balls of the 19th over, including three boundaries to Muchall, to let the contest slip.
Jack Brooks had got Yorkshire off to an excellent start in their defence with two for 13 from four overs on the spin with the new ball. The ex-Northamptonshire man had taken four wickets against Derbyshire on Friday.
He had Mark Stoneman caught behind after just five balls and Scott Borthwick taken in the deep pulling.
Durham's fledgling off-spinner Ryan Pringle mirrored Brooks's figures as Yorkshire lost 6-52 in 10 overs having been 51-0 after they were inserted.
Durham countered the loss of captain Paul Collingwood, who won the toss and invited the hosts to bat, due to a right thumb injury having completed a sharp caught and bowled chance to get rid of Dan Hodgson.
Four of the seven Yorkshire wickets fell bowled as Collingwood, Will Smith, Mark Wood and Ben Stokes also struck before Plunkett favoured the straight boundary at either end of the ground to strike two fours and two sixes.