Rocky Flintoff scored his first Lancashire century as the side thrashed Somerset by 174 runs in the One-Day Cup, setting up a quarter-final meeting with Ben Stokes and Durham.
The 18-year-old son of former England all-rounder Andrew Flintoff reached his maiden ton in 65 balls at Taunton, hitting eight fours and four sixes. Lancashire posted a new highest List A score of 443 for six, before Somerset were bowled out for 269 in 39.2 overs.
George Balderson and Tom Aspinwall each took four wickets for Lancashire. Durham finished third in Group B after losing by 77 runs at Worcestershire, meaning Lancashire will have home advantage on Friday.
Stokes conceded 61 runs from his nine overs and took one wicket, then was dismissed for one as Durham were all out for 214.