Overview
- Vaughan made 109 not out from 122 balls with 13 fours at Taunton in a 47-over chase.
- He and Tom Lammonby shared a 168-run opening stand, sealing an eight-wicket win with 26 balls to spare.
- Somerset finished second in Group B and will host Gloucestershire in Thursday's quarter-final.
- Northamptonshire were bowled out for 238, leaving a target of 239 that Somerset overhauled comfortably.
- Vaughan, son of former England captain Michael Vaughan, has captained England Under-19s and taken two U19 six-wicket hauls as an off-spinner.