Adam Lyth and Alex Lees put on an opening stand of 270 as Yorkshire reached 367-7 on day one against Durham.
Jim Allenby hit 105 as Glamorgan beat Middlesex by six wickets to keep alive their quarter-final hopes in the T20 Blast.
Northamptonshire have announced the signing of young batsman Adam Rossington on loan from Middlesex.
Tim Ambrose hit 82 not out as Warwickshire completed a remarkable three-wicket victory over Nottinghamshire.
Jonathan Trott reached the close unbeaten on 19 as Warwickshire were set 289 to beat Notts at Trent Bridge.
Marcus Trescothick’s century puts Somerset in command against Lancs; Jonathan Trott scores 23 on Warwickshire return.
Alex Hales hit 183 as Nottinghamshire piled up 397-7 after being sent in by Warwickshire at Edgbaston.
Mark Pettini's perfectly paced half-century helped Essex back to top spot and handed Somerset a fifth defeat in eight.
Rain put paid to a positive outcome in the NatWest T20 Blast clash between Middlesex and Gloucestershire at Lord's.
Kevin Pietersen's Surrey beat Glamorgan but he once again struggled to make an impact in Friday's encounter.
Joe Denly and Ryan Higgins helped Middlesex finally win a game as they beat Somerset by eight wickets at the Kia Oval.
Nottinghamshire’s batting line-up fired at Trent Bridge as Middlesex were left to rue a tempting declaration.
Paul Coughlin continued his fine Durham debut by taking three Lancashire wickets after scoring 85 at Chester-le-Street.
Alex Hales narrowly missed out on a century as Nottinghamshire fought back on day two against Middlesex.
A record-breaking stand between Chris Rogers and Eoin Morgan helped Middlesex to 417 for five on the first day at Notts.
Kevin Pietersen made just five runs on his return to English cricket as Surrey suffered a five-wicket defeat by Essex.
Division One leaders Middlesex were saved by rain as their LV= County Championship clash with Durham ended in a draw.
Liam Plunkett starred as Yorkshire overcame Northamptonshire for their third LV= County Championship win of the season.
Adam Lyth and Alex Lees put on 375 as Yorkshire dominated Northants, while Stuart Broad was in the wickets for Notts.
Middlesex have suffered a setback with the news that Gareth Berg has been ruled out for the remainder of the season.
Durham batsmen Mark Stoneman and Scott Borthwick made Middlesex suffer while Yorkshire fought back at Wantage Road.
England seamer Steven Finn tells Sky Sports he is on the right track to recovering his best form.
Middlesex seamer Tom Helm has had his loan spell at Glamorgan extended until June 19.
Surrey piled more Twenty20 misery on London rivals Middlesex with a six-wicket win in the NatWest T20 Blast.
Middlesex remain top of LV= County Championship Division One despite a washout in their match against Sussex.