Gloucestershire, Notts Outlaws, and Surrey all qualified as group winners, assuring them a home quarter-final. Sussex Sharks qualified as the best-placed runner-up, securing them the fourth and final home tie.
Northants Steelbacks and Lancashire Lightning also finished second, with Leicestershire Foxes and Kent Spitfires as the two best third-place finishers.
What is the quarter-final line-up?
Notts Outlaws vs. Leicestershire Foxes
Surrey vs. Kent Spitfires
Gloucestershire vs. Northants Steelbacks
Sussex Sharks vs. Lancashire Lightning
When are the quarter-finals?
All four matches will be played on Thursday 1 October with start times to be confirmed.
What is the semi-final draw?
The semi-final line-up will be confirmed after the quarter-finals are completed.
When is finals day?
T20 Blast finals day is at Edgbaston on Saturday 3 October.
How can I follow the knockout stages?
Sky Sports will broadcast one of the four quarter-finals, with the decision on which yet to be confirmed. The remaining quarter-final matches will be available to live stream.
All three matches on Finals Day will also be broadcast on Sky Sports. Coverage of all knockout stage matches will continue on the Vitality Blast digital channels.
Do you think Imad Wasim can win T20 Blast for Notts Outlaws? Let us know in the comments section.