Yorkshire in total command
The LV= County Championship title race appears to have been blown wide open by Nottinghamshire’s capitulation for 59 on the opening morning of their keynote clash with Yorkshire at Trent Bridge.
England seamer Ajmal Shahzad picked up the first two wickets on his way to 4-21 while Oliver Hannon-Dalby ripped out the tail with 4-18 as Nottinghamshire collapsed in just 33.2 overs.
Yorkshire captain Andrew Gale then hit an unbeaten 147 not out to deepen their misery as the visitors racked up 260 for eight in reply, giving them a lead of 201 and putting them right back in the race for their first championship pennant since 2001.
Andre Adams took 4-82 but Nottinghamshire already face a massive challenge to rescue anything from the game and stay ahead of second-placed Somerset, who are 22 points back.
Somerset boosted their own chances by bowling out Lancashire for 259 at Taunton.
Charl Willoughby and Murali Kartik shared seven wickets as Lancashire scored quickly but lost batsmen regularly. Shivnarine Chanderpaul top-scored with 56 and only a wagging tail boosted the total.
Sajid Mahmood (29), Gary Keedy (34) and Simon Kerrigan (16 not out) added 90 for the last two wickets.
Somerset reached 54 for one in reply, captain Marcus Trescothick falling after a run-a-ball 33.
Malinga Bandara returned season-best figures of 4-42 to help Kent edge proceedings in their relegation dogfight with Hampshire at Canterbury.
The Sri Lanka leg-spinner helped run through the tail and dismiss the visitors for 204 in 82 overs, the in-form Jimmy Adams top-scoring with 84.
Kent made a miserable start to their reply, losing Sam Northeast for a third-ball duck, but reached stumps on 15 for one with Rob Key and Joe Denly both unbeaten on seven.
Relegation certainties Essex made 236 for eight against Durham as Jaik Mickleburgh hit a patient 72 and captain James Foster 42 not out.
Sussex put themselves in a great position to secure promotion with a game to spare by dominating Northamptonshire in their Division Two match at Hove.
Needing eight points to secure an immediate return to Division One, Sussex bowled out the visitors for 125 after winning the toss.
Sussex openers Chris Nash and Michael Thornely had no such trouble with the pitch, however, as they launched the reply with a 228-run partnership in 44 overs. The hosts closed on 236 for two after Jack Brooks took two quick wickets.
Kevin Pietersen made a second-ball duck on his first-class debut for Surrey, who otherwise enjoyed a profitable day against Glamorgan.
The hosts were 324 for six at the close, skipper Rory Hamilton-Brown hitting a swaggering 96 from 84 balls that featured six fours and six sixes and Jason Roy adding a rapid 69.
But Pietersen was one of left-arm spinner Dean Cosker’s four wickets.
Toby Roland-Jones fell foul of the London tube strike congestion to miss the first 40 minutes of play but returned to help Middlesex bowl out promotion-chasing Worcestershire for 313 at Lord’s.
Roland-Jones was not held responsible for his late arrival by the club and the 22-year-old fast bowler came back well from his stressful start to the day to take 4-51, making him the pick of the Middlesex attack.
Moeen Ali top-scored with 66, while the one over of the Middlesex innings before the close was a maiden played out by nightwatchman Steven Finn.
Nathan Buck took a starring role to spearhead a Leicestershire fightback against Gloucestershire at Grace Road.
The 19-year-old seamer posted a career-best 26 as Leicestershire's lower order pulled them out of trouble and then followed up with two wickets in two balls at the start of Gloucestershire's reply.
By the close, Gloucestershire had staged a recovery to reach 54 for two but remain 241 runs behind Leicestershire's 295, to which Tom New contributed 63.