Yorkshire failed to spoil the party at Durham as they slipped their first defeat of the NatWest T20 Blast.
Durham christened their new floodlights with a six-run win in front of a lower-than-expected crowd, largely due to the weather.
Rain delayed the 7pm start by 25 minutes, after which the sun shone throughout Durham’s innings after they were put in.
Their match-winners were John Hastings, whose unbeaten 37 off 16 balls lifted them to 182-6, and Keaton Jennings, whose occasional medium pace accounted for two key Yorkshiremen in Jonny Bairstow and the Australian Glenn Maxwell.
Rich Pyrah and Jack Leaning also holed out on the boundary to give Jennings 4-37. Yorkshire replied with 176-8.
The difference lay in the last over of each innings, with Hastings involved in both. He hit Tim Bresnan’s last four balls for three fours and a six as 21 came off the over, then bowled the final over of the match with Yorkshire requiring 21 to win.
Bresnan had his chance of revenge with 12 needed off the last two to tie, but he missed the first before hitting the last high over the mid-wicket boundary.
It left him unbeaten on 36, but scarcely atoned for his figures of none for 51.
Jennings, Durham’s four-day opening batsman, goes in well down the order in this form of cricket and had bowled only one over in the three previous T20 matches.
But with skilful variations of pace he persuaded Bairstow and Maxwell to play across the line of straight balls, leaving a heavy onus on skipper Andrew Gale.
He made 41 before stepping on his wicket as he clipped Paul Collingwood to long leg.
Yorkshire were ahead of Durham at the equivalent stage until the final over, but the loss of wickets proved crucial as the hosts had two men well set at the end.
Hastings and Gordon Muchall added 59 in 23 balls, with Muchall unbeaten on 34 off 24.