Defending champions Nottinghamshire replaced opponents Essex at the top of Rothesay County Championship Division One after winning by an innings and 52 runs at Chelmsford.
Resuming on 13-2 and trailing by 260, the hosts were dismissed for 221 in their second innings as Notts seamer Fergus O'Neill claimed 5-39.
Charlie Allison top scored for Essex with 56 off 104 balls before being trapped lbw by Liam Patterson-White, who took 3-66.
Leicestershire claimed a first Division One win in 23 years by beating Yorkshire by an innings and 39 runs at Grace Road.
Yorkshire resumed on 32-2 in their second innings - trailing by 236 - and were all out for 229 following three wickets apiece for Josh Davey, Alex Green and Ajaz Patel.
Leicestershire, whose decisive first-innings total of 453 was underpinned by centuries from Rehan Ahmed and Nick Kelly, remain bottom of the table following promotion as Division Two champions.
Eddie Jack took four second-innings wickets as Hampshire secured a 118-run victory over second-placed Sussex at Hove.
After Hampshire increased their overnight lead to 252 by racking up 411, the hosts were skittled for 134 in their second innings, with Jack's exploits aided by three wickets each for Kyle Abbott and Felix Organ.
Somerset lead Warwickshire by 219 with four second-innings wickets in hand thanks to an unbeaten partnership of 193 between Thomas Rew (133no) and captain Craig Overton (89no).
Surrey lead Glamorgan by 145 runs with one second-innings wicket remaining following a century from captain Rory Burns (115) at Sophia Gardens.
In Division Two, Ben Aitchison claimed a five-wicket haul as Derbyshire completed a resounding nine-wicket triumph over Lancashire inside three days at Chesterfield.
Aitchison followed his 75 with the bat on day two with figures of 5-49 before the hosts knocked off the 24 runs required for victory inside nine overs.
Lancashire had to settle for the consolation of a maiden first-class half-century for 17-year-old wicketkeeper Joe Moores, who hit four sixes in his 57.
With Ben Stokes absent on day three at Chester-le-Street following his England recall, leaders Durham trail promotion rivals Northamptonshire by 245 runs.
Ollie Robinson's knock of 84 in a last-wicket stand of 58 with Callum Parkinson helped the hosts put 405 on the board, a first-innings deficit of 45.
Northamptonshire reached 200-6 at stumps - leading by 245 - following a maiden first-class half-century for injury substitute Gus Miller (61).
Kent lead Middlesex by 206 runs with three wickets remaining in their second innings going into the final day at Canterbury.
In a match ambling towards a low-key draw, bottom-of-the-table Gloucestershire trail Worcestershire by 40 runs on 59-1 in their second innings.
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