Warwickshire could meet local rivals Worcestershire in the One-Day Cup semi-finals in late August, if both sides win their respective quarter-finals.
The Bears landed a home tie with Essex on Wednesday 17 August in the quarter-final draw, made immediately following the conclusion of the group stages.
Worcestershire must travel to Taunton to play Somerset the same day.
The other semi-final will involve the winners of Kent v Yorkshire, at home to either Northamptonshire or Surrey.
North Group winners Northants are to host Surrey, who finished fourth in the South Group, at Wantage Road on Thursday, 18 August (13:30 BST).
South Group runners-up Kent will welcome Yorkshire, third in the North Group, to Canterbury on the same day (14:00 BST).
Both the Warwickshire/Essex and Somerset/Worcestershire quarter-finals will start at 11:00 BST.
The two semi-finals are scheduled for Sunday, 28 August and Monday, 29 August.
The final is to be played at Lord's on Saturday, 17 September.
Lord's One-Day Cup final history
The One-Day Cup, in its third season as English cricket's season-ending limited-over showpiece, will have new winners.
Warwickshire and Worcestershire last met at the knockout stage in limited-overs cricket in 2004 when a Vikram Solanki-inspired Worcester beat the Bears by 41 runs at Edgbaston in the Cheltenham & Gloucester Trophy.
Lancashire remain the most successful side in English one-day knockout history, having won on 11 of their 17 trips to Lord's, but Warwickshire (with 18) have contested more finals.