A thrilling third-day performance from Lancashire saw them earn what could be a Championship-clinching victory after seeing off title rivals Hampshire by one wicket.
Danny Briggs starred with bat and ball to give Warwickshire the edge in the hotly-contested County Championship title race.
Hampshire's bid to secure a first County Championship title since 1973 got off to a poor start as they were bowled out for 143 by rivals Lancashire.
Sir Alastair Cook hit a hundred for Essex, while Chris Woakes picked up three wickets in a bowler-dominated day in Leeds.
Sam Robson hit the second-highest score of the County Championship season as Middlesex piled on the runs on the second day against Sussex in Division Three.
Chris Benjamin made a hundred on his Championship debut and Sam Hain hit his first red-ball ton for over two years as Warwickshire dominated day one at Lancashire.
The LV= Insurance County Championship returns on Monday, August 31 for the Division Stage, but what's the format and when are the fixtures?
Durham beat Worcestershire to book a home knockout tie in the Royal London Cup, while Surrey's Tim David hits a 55-ball ton in a hammering of Warwickshire.