Daniel Bell-Drummond struck an unbeaten 79 to steer Kent to a first County Championship win over Lancashire at Old Trafford in 27 years.
Joe Root scored his second Vitality County Championship century in as many innings with a sublime 156 for Yorkshire against Glamorgan at Headingley.
Somerset beat Essex in a two-day wicket-fest at Taunton to claim their first win of the season after four straight draws.
Twenty wickets fell on day one of the Vitality County Championship match at Taunton with Essex rolling Somerset for 128 after they had been bundled out for 156.
Champions Surrey needed only 30.2 overs to wrap up victory by an innings and 11 runs against Hampshire in their Vitality County Championship clash at the Kia Oval.
Ben Duckett scored an unbeaten 197 to hold Nottinghamshire's batting together on day one against Warwickshire at Edgbaston.
Essex claimed their second win of the County Championship season with an innings and 124-run win over Lancashire.
Joe Root, Harry Brook and Zak Crawley were all out cheaply as the County Championship returned for round three with the Dukes ball instead of the Kookaburra.
Dane Paterson starred for Nottinghamshire with a five-for on the opening day of the 2024 County Championship season.
The English cricket summer officially gets under way on Friday with the start of the County Championship, but who and what should we be looking out for?
Keep up to speed with all the signings, departures and overseas players in county cricket for the 2024 season.
Check out the fixtures for the LV= County Championship in 2024, with the season running from April 5 to September 29.
Check out the fixtures for the Vitality Blast competition in 2024, which starts on Thursday May 30 and concludes on September 14.
Josh De Caires has been called up to the England Lions squad for the first time for a three-week training camp in the UAE next month.
Check out the fixtures for the One Day Cup in 2024, which begins on July 24 and concludes with the final on September 22 at Trent Bridge.
Middlesex were relegated from Division One after losing to Nottinghamshire by two wickets in a thrilling final day of the County Championship season.
Essex's lingering hopes of winning the LV= Insurance County Championship Division One title were dealt a huge blow by Ben Sanderson's bowling for Northamptonshire.
Tom Lawes took five wickets as Surrey claimed three of the five points they need to be crowned county champions on the opening day against Hampshire.
Surrey will go into the final week of the County Championship title race in pole position after Essex fell to defeat against Hampshire.
Middlesex have been fined £50,000 and handed suspended points deductions for breaching financial regulations.