There was pure drama at Colwyn Bay, while there were stand-out displays for Nottinghamshire and Derbyshire in Division Two.
Glamorgan 294 & 182 v Sussex 268 & 211/9
Nottinghamshire 213 & 344/9d v Northants 141 & 167/4
Worcestershire 363 & 295/8d v Gloucestershire 258 55/3
Durham 480/9d v Derbyshire 164 & 305/6
Kent 313/9 v Leicestershire 350 - no play due to rain
GLAMORGAN v SUSSEX
Ollie Robinson starred for Sussex as they recorded their sixth victory of the season to enhance their Division Two promotion chances at Colwyn Bay.
Robinson, playing his first Championship game of the season took seven wickets in the game and struck 41 from 35 balls, finishing the game with a six over long on.
There was much to do when the ninth wicket fell with thirty runs needed, but Robinson and Danny Briggs played sensibly to gain the victory.
Glamorgan were without five senior players and can take a lot of credit from their performance which augurs well for the future, but they will rue dropping four catches in Sussex’s second innings, including Van Zyl, who was dropped at second slip on 1, that would have reduced Sussex to 11 for 3.
Sussex had been set 209 to win, and at 154 for 4, were well on their way to victory until they lost four wickets for five runs in nineteen balls.
After recovering form 10 for 2, Chris Nash and Stiaan Van Zyl put on 90 before Andrew Salter took two wickets in successive balls. The off-spinner trapped Van Zyl before Luke Wright ran down the pitch to his first ball and was stumped by yards.
Nash was then joined by Ben Brown and they played sensibly to add a further 55 runs before the collapse set in. Brown was caught on the midwicket boundary by Zac Ringrose, a professional from New Zealand who is playing for the Menai Bridge club on Angelsey.
Nash, who top scored with 68 was well taken at second slip off Rory Smith, who then dismissed Chris Jordan who edged to the wicketkeeper, before David Wiese was also caught by Ringrose at square leg.
When Jofra Archer was LBW to Hogan, Glamorgan were favourites to win, but Robinson turned out to be Sussex’s hero. Earlier Glamorgan had added a further 56 runs in their second innings before they were dismissed, with Craig Meschede again top scorer with 41, and Jordan taking 5/46.
Sussex then made a poor start, when Lukas Carey dismissed Luke Wells with the first ball of the innings, then, for the second time in the game, Angus Robson was bowled offering no stroke.
NOTTINGHAMSHIRE v NORTHAMPTONSHIRE
Nottinghamshire are closing in on their seventh victory of the season after maintaining the upper hand in their Specsavers County Championship match against Northamptonshire at Trent Bridge.
Northants, set to score an unlikely 417 to topple the undefeated Division Two leaders, had reached 167 for four in their second innings, with Rob Newton having made 53.
Earlier, the home side had batted on for around 10 minutes before declaring their own second innings closed on 344 for nine, once Riki Wessels had been dismissed for 116.
Wessels had faced only 88 balls and hit 16 fours and four sixes in scoring his third century of the season. Azharullah claimed his wicket, giving him match figures of eight for 136.
Play eventually got underway at around 1.25pm, after overnight and morning rain had delayed the start. Northants, aware that they were in danger of being docked points for a poor over-rate, began with the spin of Rob Keogh and with Azharullah bowling from around four paces.
Resuming on 317 for eight, Wessels and Jake Ball disrupted their plans by crashing away a number of boundaries as their stand passed three figures, a county ninth wicket record against Northants.
The unlucky Keogh saw both Alex Wakeley and Richard Gleeson spill steepling offerings to reprieve Wessels before Keogh showed them how to do it, out at deep square leg.
Murphy and Newton were largely untroubled in putting on 69 for the first Northants wicket but the introduction of Samit Patel parted them, with Murphy falling leg before wicket for 30.
Newton had a life on 21 when he was dropped in the slip cordon by Cheteshwar Pujara, off Brett Hutton.
The 27-year old but rode his good fortune to reach his 50 from 109 balls but then ballooned a sharply-lifting delivery from Ball to Hutton at fourth slip. Richard Levi went in the same over, edging behind for four.
Hutton then pulled off another catch, a stunning diving effort, as Harry Gurney found the outside edge of Keogh’s bat, with Northants having slid from 113 for one to 122 for four.
Wakeley, with 31, and Josh Cobb, who is unbeaten on 36, steadied the ship with an unbroken stand of 45, made, ironically, in the best conditions of the day. Time was called with a further 250 runs still required, a winning fourth innings figure not achieved at Trent Bridge since 1925.
WORCESTERSHIRE v GLOUCESTERSHIRE
Daryl Mitchell scored his fifth Specsavers County Championship century of the campaign as Worcestershire set Gloucestershire a 401 target at New Road.
The 33-year-old opening batsman put a recent lean spell behind him - 33 runs from the previous six innings - in making an accomplished 130.
Then star spinner Ravichandran Ashwin struck two early blows as Gloucestershire closed on 55-3.
As on many occasions throughout his lengthy career, Mitchell, the curent PCA chairman, provided the glue which held the Worcestershire innings together.
He went to three figures off 156 balls with 10 fours and a six in what is his 99th appearance out of Worcestershire last 100 Championship fixtures.
It followed on from his 120 against Derbyshire, 161 versus Northamptonshire, 121 off the Sussex attack and 142 when facing Kent.
Mitchell was eventually run out attempting a second run shortly before the declaration which left Gloucestershire a minimum of 121 overs to chase their daunting total.
He has now amassed 894 Championship runs at an average of 47 so far this summer.
Brett D'Oliveira, George Rhodes and Ashwin all provided excellent support for Mitchell as Worcestershire capitalised on their first innings lead of 105.
The declaration came at 295-8 and the home side will be hoping the weather forecast is kind tomorrow particularly with promotion rivals Sussex triumphing against Glamorgan and moving into second spot.
Worcestershire resumed on 10-0 and D'Oliveira launched an early offensive in making 55 off 58 balls and dominating an opening stand of 76 with Mitchell.
He followed up his first innings top-score of 93 by striking 10 boundaries.
D'Oliveira's dismissal - bowled by Liam Norwell - triggered a minor collapse with the out of form Tom Fell falling in the same over for a second ball duck when caught behind and Joe Clarke (5) perishing at square leg off a top edged sweep against Tom Smith.
Rhodes (45) proved a valuable ally in a partnership of 114 in 31 overs before he went to try and paddle Smith around the corner and was lbw.
Indian star Ashwin raced to 28 as a further 55 was added in nine overs with Mitchell until he chipped Norwell to mid wicket.
Ben Cox showed positive intent with his first two scoring shots being sixes over long off at Smith's expense.
There was a flurry of wickets before the declaration as Mitchell and Cox (15) were run out and skipper Joe Leach (7) was bowled.
Leach then took the new ball and, after switching ends, made the first breakthrough as Cameron Bancroft (14) was caught behind by Cox in a sharp piece of work standing up to the wicket.
Ashwin came into the attack after just six overs and quickly made an impact by bowling Will Tavare for a duck and then having Chris Dent (16) caught at second slip.
He ended the day with the impressive figures of 10-3-11-2.
DURHAM v DERBYSHIRE
Luis Reece's second Specsavers County Championship century of the season kept Derbyshire afloat on the third day of their match against Durham at Chester-le-Street.
The former Lancashire left-hander batted until the 73rd over to make 106 as the visitors reached 305 for six after following on 316 behind.
Derbyshire found conditions more favourable under clearer skies than when they were dismissed for 164 in two sessions in the first innings, and they were also able to take advantage of the absence of Paul Coughlin.
The all-rounder went for a scan on a side injury and with 18-year-old Matthew Potts unable to replicate the rich promise of his first four appearances Durham lacked resources.
He did, however, take his first wicket of the match six overs from the close when he swung one in to have Alex Hughes lbw for 39.
There was a period in early afternoon when Reece began to play with almost casual elegance, often stroking the ball straight to fielders. But any hint of lack of application proved misleading as he accumulated patiently to reach his century off 215 balls.
He got there by pulling Potts behind square for his 12th four, having been struck on the helmet when trying the same shot on 69. That was a rare moment of discomfort at a time when Potts appeared to have been told to bowl short, which suggested Durham were running short of ideas.
They might have been encouraged when two balls from Graham Onions shot along the deck in early afternoon, but there was no repeat on the placid surface.
Reece finally pulled Keaton Jennings straight to mid-wicket and there was a wicket for another occasional bowler when Cameron Steel's leg-spin accounted for Wayne Madsen with his third ball.
Madsen contributed 48 to a third-wicket stand of 106 before being caught behind by Michael Richardson when attempting to sweep.
Good running was a feature of an opening stand of 99, in which Ben Slater made an attractive 57, his first half-century of the season.
He was yorked by a ball from off-spinner Ryan Pringle, which drifted in to hit the off stump.
Then for the second successive day Derbyshire lost a wicket two balls before lunch as Billy Godleman shuffled across and inside edged Chris Rushworth via his box on to the leg stump.
Only one wicket fell in the second session, followed by three in the evening. Reece's exit left Hughes and Matt Critchley to face 16 overs of the new ball, but in the sixth Critchley played back to a ball from Onions which moved in sharply to have him lbw.
Hughes was beaten several times and lost his early fluency before Potts snared him to expose a tail which Durham should knock over on the final morning.