Matt Renshaw struck his third County Championship century in eight innings as Somerset reached 307 for seven on the first day of their clash with leaders Nottinghamshire.
The Australian left-hander hit 106 off 171 balls, with 12 fours and two sixes, before becoming a third victim for Notts off-spinner Matthew Carter. Captain Tom Abell contributed 57 and Steve Davies 59 not out to Somerset’s total.
Renshaw was bowled trying to launch Carter back over his head with the total on 176 and is set to depart in August due to an Australia A tour call-up.
Rory Burns produced an almost flawless century as third-placed Surrey recovered to post 216 for three against Hampshire on the opening day at the Ageas Bowl.
Skipper Burns registered his third ton of the season and was 109 not out, hitting 13 fours, by the close as Surrey fought back after losing their first two wickets for just one run.
England hopeful Mark Stoneman was out for nought off the third ball and Scott Borthwick was run out for a duck by Brad Taylor’s direct hit two balls later.
Shivnarine Chanderpaul and Jordan Clark both made half-centuries to rescue Lancashire from a perilous position on the first day of their match against Essex at Old Trafford.
Lancashire were 59 for five in the 30th over before former West Indies captain Chanderpaul (58) and Clark (79) put on 136 for the sixth wicket.
By close, Lancashire had recovered to reach 297 for nine, with Tom Bailey unbeaten on 36.
Warwickshire leg-spinner Josh Poysden returned a career-best five for 29 as the Division Two leaders trailed Glamorgan by 196 runs with eight wickets remaining at Edgbaston.
Glamorgan’s batting struggles continued as they were bowled out for 220, with Australia’s Usman Khawaja making just four on his debut, before Warwickshire finished 24 for two at the close.
Sean Dickson became the first Kent player to register a County Championship hundred this season as Gloucestershire’s bowlers were made to toil at the Brightside Ground.
Translating his impressive one-day form into runs in the red-ball format, the South African top-scored with 117 to help the Second Division promotion contenders to close on 297 for four at the end of day one.
Derbyshire lead by 79 runs with two wickets remaining at the Riverside after bowling Durham out for 96.
Duanne Olivier took five for 20 as Durham were skittled in the 44th over, but the visitors hit back as Chris Rushworth, Nathan Rimmington, Josh Coughlin and Matt Salisbury all claimed two wickets apiece as Derbyshire reached 175 for eight.
Zak Chappell claimed a maiden first-class five-wicket haul as Leicestershire edged the first day at Wantage Road, bowling Northamptonshire out for 204 before going to the close 64 for three.
Chappell, playing his first County Championship match of the season, took six for 44 with the bulk of his work done in a fiery spell after lunch.