Notts Outlaws will face Leicestershire Foxes in a Vitality Blast quarter-final at Trent Bridge on Thursday 1 October.
An East Midlands derby showdown was the result of a final day of group stage drama, which saw the Outlaws defend 151 against Durham to secure the top-seeded position in the last eight.
The Outlaws have qualified for the latter stages of the T20 domestic competition in ten seasons out of 11.
Leicestershire snatched the final place in the draw with a 22-run success over Lancashire at Old Trafford.
Surrey versus Kent, Gloucestershire versus Northamptonshire and Sussex versus Lancashire have been confirmed as the matches that make-up the draw.
With all four ties taking place on the same date, two days out from finals day, start times and SKY television scheduling will be confirmed in the coming days.