Result: Durham (281/7; Borthwick 84, Richardson 53) beat Yorkshire Vikings (266/8; Bresnan 92; Rushworth 3/67) by 15 runs
Durham boosted their chances of reaching a second quarter-final by beating the Yorkshire Vikings by 15 runs at Emirates Riverside.
After progressing in the NatWest T20 Blast on Friday, Durham can also reach the last eight in the Royal London One-Day Cup after a close encounter.
A win at the Lancashire Lightning at Emirates Old Trafford would seal that but they could still qualify if not, depending on other results.
Scott Borthwick anchored Durham’s innings of 281/7 with 84 while Michael Richardson made 53 while overseeing the final ten overs in which the hosts scored 97.
And they proved to be vital runs as despite a magnificent 92 from Tim Bresnan, the Vikings were stifled in their chase and fell short as Durham also lifted the Durham Light Infantry Trophy.
There had not been a boundary for 12 overs until Bresnan twice planted Chris Rushworth into the stand over midwicket in the 48th.
He than holed out off the last ball of the over, leaving 28 needed off two with two wickets standing, and Mark Wood conceded only one run in the 49th as Yorkshire finished on 266/8.
Keaton Jennings, stepping in to Paul Collingwood’s shoes as the captain was off the field injured, skilfully marshalled an excellent bowling display led by Wood after he was made available to continue his comeback from injury.
He took the wickets of Alex Lees and Jack Leaning while conceding only 43 runs in ten overs.
But Borthwick was Durham’s star, top-scoring with 84 and taking 1/48 in ten overs of leg spin.
A fifth-wicket stand of 76 between Bresnan and Jack Leaning saw the Vikings as favourites, but when Wood was recalled Leaning steered a catch straight to backward point and the momentum was never recovered.
Borthwick accelerated nicely from a 74-ball half-century to reach 84 before breaking his bat, only to fall without addition when the new blade sent a miscued hook to long leg in the 41st over.
Durham did well to take 97 off their last ten overs as, despite hitting only two boundaries, Michael Richardson kept the score moving with 53 off 58 balls.
He was helped in the last ten overs by cameos from Ryan Pringle, with 27 off 20 balls, and Stuart Poynter, who included a straight six off Bresnan in his unbeaten 27.