Simon Harmer took a career best 8-36 as Essex hammered Warwickshire by an innings and 164 runs at Chelmsford.
Middlesex earned a first County Championship win of the season, a heavy innings-and-64-run win over Yorkshire at Lord's.
Champions Middlesex are on course to beat Yorkshire and claim their first Specsavers County Championship win of the season.
Sam Robson gave the England selectors a reminder of his ability as Middlesex took control of their Championship match against Yorkshire.
Defending champions Middlesex draw against Somerset, Hampshire top Division One and Durham suffer last over heartbreak again.
Warwickshire's fears of relegation were made worse as Hampshire reduced them to 49-6 on day two at the Ageas Bowl.
Ben Coad took a career-best 6-25 as Yorkshire bowled out Lancashire for 123 on day one of their County Championship Roses clash.
Marcus Trescothick hit a club record 50th first-class century for Somerset as they drew with Warwickshire in Taunton.
Hampshire slumped to 18-5 - losing five wickets for no runs in 17 balls - as Essex ran riot in their Specsavers County Championship match.
Alastair Cook continued his outstanding early-season form while there was an injury scare for James Anderson.
Colin Ingram hit a third hundred for Glamorgan in the Royal London One-Day Cup in their 15-run win over Kent.
James Vince's 178 for Hampshire proved in vain as they slipped to a three-wicket defeat to Glamorgan in the RL One-Day Cup.
Alastair Cook's century helped Essex to a tense 10-run victory over Sussex in the RL One-Day Cup despite a Jerome Taylor hat-trick.
Lancashire won their first game of the Royal London One-Day Cup as Steven Croft's stunning 127 helped them beat Warwickshire.
Yorkshire completed a resounding three-day win over Lancashire to secure their second Specsavers County Championship win.
Billy Root's maiden limited-overs century helped Nottinghamshire to a 10-run Royal London One-Day Cup win over Warwickshire.
Sam Hain struck an unbeaten 89 as Warwickshire began their Royal London One-Day Cup defence with a 10-wicket win at Northampton.
Rob Key previews the Royal London One-Day Cup with Warwickshire looking to defend their crown as the white-ball season begins.
The 2017 Royal London One-Day Cup starts on Thursday, test your knowledge on the tournament with our 10-question quiz...
Lancashire clinched a comeback win over Somerset on day four of their County Championship clash, skittling the visitors for 130.