Durham boosted their chances of reaching a second quarter-final by beating the Yorkshire Vikings by 15 runs at Emirates Riverside.
The Durham Jets will travel to Gloucestershire on Wednesday 10 August in the NatWest T20 Blast quarter-final.
Graham Onions could be in line for a first limited-overs appearance of the season in tomorrow's Royal London One-Day Cup match against the Yorkshire Vikings.
Mark Stoneman and Calum MacLeod shared the Durham Jets' record Twenty20 stand of 141 as they secured a NatWest T20 Blast quarter-final berth.
All-rounder Adam Hickey could make his T20 debut for Durham in tonight's crunch NatWest T20 Blast encounter with the Derbyshire Falcons (6:30pm start).
How can the Durham Jets secure NatWest T20 Blast qualification this evening?
Durham's Royal London One-Day Cup match against the Yorkshire Vikings will be played for the Durham Light Infantry Trophy.
Durham kept up their quarter-final aspirations with a convincing win against Warwickshire in the Royal London Cup tie at South Northumberland CC.
Seven wickets for Gurman Randhawa and an unbeaten 22 from Neil Killeen saw the Seconds to a nailbiting one-wicket win over Leicestershire.
Durham head coach Jon Lewis has named a 13-man squad for tomorrow's Royal London One-Day Cup match against Warwickshire at South Northumberland CC.