Yorkshire fell just short in pursuit of a target of 143 in a thrilling Friends Life t20 match against North Group rivals Durham at Headingley.
The Tykes looked down and out when they slipped to 42-5 in their reply, only for Richard Pyrah to share a 57-run stand in eight overs with wicketkeeper Gerard Brophy.
Pyrah, in his first outing since breaking a bone in his hand early in the season, hit three fours and a six to reach 34 before Liam Plunkett had him caught on the mid-wicket boundary.
Leg-spinner Scott Borthwick then turned the match firmly in Durham's favour by bowling Brophy (32) and Mitchell Starc with consecutive deliveries.
Left needing 14 off the last over, Yorkshire's hopes were suddenly rekindled when Azeem Rafiq drove Borthwick's first ball for six and then lashed the next to the extra cover boundary.
However, only three came off the next two deliveries and, after Rafiq let the fifth ball go by outside off-stump it meant four were required from the last delivery which the all-rounder could only hit for a single.
Durham's opening bowlers, Chris Rushworth and Graham Onions, made it tough for Yorkshire with a couple of wickets each, the former removing Andrew Gale and overseas recruit David Miller before he had conceded a run.
The Dynamos had been dealt an early blow at the start of their innings too, losing ex-Yorkshire player Herschelle Gibbs for just six in the second over.
Australian paceman Starc claimed 2-21 off his four overs, but it was Moin Ashraf (2-28) who claimed the key scalp of Ben Stokes for 36.
Phil Mustard (19) made a useful contribution at the top of the order, putting on 41 in five overs with Stokes - who faced 28 balls and hit five fours - that included three boundaries in a Sidebottom over that cost 16 runs.
Some solid late hitting from Dale Benkenstein (25) and Gordon Muchall, who ended up unbeaten on 24, took the visitors to a final total of 142-6, a score that proved to be just enough in the final reckoning.