Luke Wells hit a career-best 258 to put Sussex firmly in charge of their Division Two game against Durham on day two at Hove.
Worcestershire openers Daryl Mitchell and Brett D'Oliveira put on 243 for the first wicket to earn a lead over Derbyshire.
Jamie Porter took match figures of 7-45 as Essex crushed Hampshire by an innings and 97 runs in the Specsavers County Championship.
Nottinghamshire assumed total control on day two of their Specsavers County Championship match against Glamorgan at the SSE Swalec in Cardiff.
Centuries from Jake Libby and Rikki Wessels saw County Championship Division Two leaders Nottinghamshire enjoy another good day at Glamorgan.
Worcestershire beat Derbyshire to claim top spot in the North Group and clinch a home semi-final in the RL One-Day Cup.
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.
Lancashire won their first game of the Royal London One-Day Cup as Steven Croft's stunning 127 helped them beat Warwickshire.
Billy Root's maiden limited-overs century helped Nottinghamshire to a 10-run Royal London One-Day Cup win over Warwickshire.
Gloucestershire claimed an improbable Royal London One-Day Cup win over Middlesex on Sunday, as Somerset and Surrey also won.
Rob Key previews the Royal London One-Day Cup with Warwickshire looking to defend their crown as the white-ball season begins.
Gloucestershire and Durham's County Championship Division Two encounter ended in a draw, despite some late drama.
The 2017 Royal London One-Day Cup starts on Thursday, test your knowledge on the tournament with our 10-question quiz...
Kent continued their fast start to the season with a second successive three-day victory over Derbyshire in Division Two.
Nottinghamshire breezed to an innings-and-88-run triumph over Sussex inside two days, with James Pattinson rising to the fore.
Riki Wessels struck a career-best unbeaten 202 as Nottinghamshire piled on the runs against Sussex at Trent Bridge.
Joe Root will play his first innings in England since being appointed Test captain when Yorkshire take on Hampshire.
Sam Northeast smashed an unbeaten 173 as Kent took apart Sussex's attack on day three of their County Championship Division Two clash.
Nottinghamshire are closing in on an opening Specsavers County Championship Division Two win over Durham at Emirates Riverside.