Twenty wickets tumble at Trent Bridge

	Near miss: Neil Edwards is run out for 99 at Taunton © Getty Images

Darren Pattinson bowled his first over on the opening day at Trent Bridge at around 11.05 am and also bowled the final over at around 6.30 pm. During that time 20 wickets tumbled as Pattinson ripped Lancashire apart with a career-best 6 for 30 before Nottinghamshire were removed for 202. It was the second time in two matches that Lancashire had been involved in such a day, following their game against Durham last week. Pattinson took a five-wicket haul on his county debut in the opening match of the season against Kent, but had to move aside while Ryan Sidebottom and Stuart Broad were available. With those two on England duty, Pattinson had another chance and responded in destructive fashion. Lancashire's top order - missing Mohammad Yousuf who has had some minor visa issues - slumped to 16 for 4, and later the last six wickets went for 12. In between Stuart Law (55) and Steven Croft began a recovery but Mark Ealham started the second collapse by having Croft caught by Graeme Swann. Wickets continued to fall as Nottinghamshire slipped to 43 for 3. Samit Patel produced the best innings of the day, adding 93 with Mark Wagh (55), and Patel's 74 off 71 balls took his team into the lead before Gary Keedy - the first spiner of the match - grabbed two quick wickets. Croft then swiftly wrapped up the innings with his medium-pace, although the lead of 89 is useful on a lively surface. The pitch inspectors are on their way for the start of the second day.

Chris Tremlett continued the promising form he showed for England Lions last week with five wickets as Hampshire had a productive first day against Surrey at The Rose Bowl. He removed Jon Batty for a duck and returned to have Scott Newman bowled via an inside edge when he appeared set. Mark Ramprakash, searching for his 100th hundred, was caught behind for 17 as plenty of Surrey batsmen made starts without capitalising. Mark Butcher, well caught by Sean Ervine at midwicket, and Usman Afzaal fell in the forties despite being dropped three times between them. Matthew Nicholson's 40 gave the total some respectability and the day ended on a positive note for Surrey when Jimmy Ormond removed Michael Carberry in his first over.

The Somerset top order enjoyed the conditions at Taunton and Sussex endured a tough day in the field. James Hildreth scored his first Championship century of the season as the visitors were made to toil in typically batsman-friendly conditions. Chris Adams put Somerset in, perhaps swayed by last week's match when Somerset were 23 for 6 against Hampshire. Neil Edwards was within touching distance of his own century but, having advanced out of the crease against Ollie Rayner, was run out for 99 by some swift work from Chris Adams at slip. Marcus Trescothick hit 74 with 11 boundaries before becoming Corey Collymore's first Championship wicket.

Click here for John Ward's report of the first day's play between Durham and Yorkshireat Chester-le-Street where Michael Di Venuto dominated with an unbeaten 184.

Chris Taylor and Steven Snell hit centuries to haul Gloucestershire out of a hole against Worcestershire at New Road. The pair added 222 in 53 overs for the sixth wicket after the top order had fallen against the new ball to leave them struggling on 85 for 5. Simon Jones struck twice in his first spell, but Taylor and Snell carried the game away from Worcestershire. Snell began his cricketing life on the Isle of Wright and has now been preferred ahead of Stephen Adshead in the Championship. He reached his first century off 179 balls while Taylor hit four sixes in his 137 before being caught behind off Gareth Batty. But the momentum was now with Gloucestershire, a point emphatically hammered home by Mark Hardinges' 43-ball half-century during the final session.

Jonathan Clare continued the impressive form, which has earned him a contract extension, and his unbeaten 70 boosted a mediocre batting performance by Derbyshire at Sophia Gardens. The Glamorgan attack made early inroads as James Harris helped reduce Derbyshire to 66 for 3. Chris Rogers made 69 before being caught behind off David Harrison, but Clare and Graham Wagg (32) started the fightback with a stand of 50. Robert Croft worked his way through the tail to end with four wickets, including his 900th for Glamorgan. Matthew Wood fell early to Wagg, but Gareth Rees gave Glamorgan a solid platform to their reply.

Jacques du Toit hit his maiden first-class century as Leicestershire piled up 527, their highest total for nearly two years, against Northamptonshire at Grace Road. He built on the solid work from the top order on the opening day, adding 129 with Paul Nixon (79) for the seventh wicket. Even when Nicky Boje removed them both the problems didn't stop for Northamptonshire as Jermaine Lawson clubbed 35 off 29 balls at No. 11. Niall O'Brien built a solid response after Lawson removed Stephen Peters with a leg-stump yorker, finishing the day unbeaten on 76.