Essex need at least 400 but Sanderson claimed three for 15 with the wickets of Alastair Cook, Nick Browne and Dan Lawrence in a devastating nine-over spell, conceding just 14 runs.
They were 125 for four by close of play, still trailing by 244 runs but their slight hopes are still alive following Surrey’s collapse at the Ageas Bowl.
Liam Dawson claimed his fourth five-wicket haul of the season for Hampshire to make Surrey suffer, but the visitors only need a draw to seal top spot.
Left-arm spinner Dawson moved to 45 wickets for the season and his five for 44 kept Surrey, who needed to post 300 for the title, waiting.
Joe Denly smashed an unbeaten century to help relegation-threatened Kent to 345 for four on day two against Lancashire at Canterbury.
Kent were in pursuit of 327 and Ben Compton anchored their innings but fell five short of a century.
Denly then played a more flamboyant 105 not out, from 149 balls with 11 fours and a six, to record his first red-ball century of the season as Kent closed with two potentially crucial batting points and a lead of 18.
Neil Wagner registered a career-best 72 for Somerset but weather played spoilsport once again in their meeting with Warwickshire at Edgbaston.
There were 35 overs lost on day one and another 36 were wiped out on day two, which ended with Warwickshire on 112 for three in reply to the visitors’ 215.
Ryan Higgins became only Middlesex’s second player to make a County Championship century to give the relegation threatened side a chance of victory against Nottinghamshire.
Higgins held Middlesex’s first innings together with 137 – his first hundred for the county and shared partnerships of 61 with Stevie Eskinazi (58) and 108 with Jayant Yadav (56).
Middlesex claimed three batting bonus points with 366, but Nottinghamshire responded with 92 for two, with Ben Slater on 49 not out.
Worcestershire have secured promotion back to Division One of the LV= Insurance County Championship.
The Pears secured second spot in Division Two, behind champions Durham, after they reached 300 for a second batting bonus point during the early stages of a weather-interrupted second day against Yorkshire at Headingley.
Worcestershire started this fixture needing a maximum of two points to seal top-flight cricket for 2024 and were 280 for five overnight.
Captain Brett D’Oliveira reached a century before he fell lbw to Matt Milnes to leave the score 299 for six and Worcestershire were stuck on 299 for 10 balls before Baker pushed Milnes through the covers for two at 10.55am – 25 minutes into day two – as celebrations erupted on the players’ balcony.
Durham batter David Bedingham passed 1,000 runs for the season before team-mates Ben Raine and Vishwa Fernando did the damage with the ball on day two.
In a rain affected day, Division Two champions Durham looked to secure maximum batting points and declare with rain heavily on the radar and Bedingham passed his landmark and went on to make 156 as Durham declared on 457 for eight in Chester-le-Street.
Bowler Raine dismissed the visitors’ top four in the hour before lunch and Fernando picked up his first two wickets for Durham before rain arrived at 1.45pm with Leicestershire 96 for six.
Derbyshire’s Luis Reece became the first batter to be given out by a female umpire in 123 seasons of county cricket as they totalled 450 on day two over Glamorgan.
Reece had reached his century but Redfern lifted her finger in the 100th over of the Derbyshire first innings when he was caught behind by Chris Cooke off Jamie McIlroy for 139.
Glamorgan have a big total to chase but play was cut short by bad light with Zain ul-Hassan and Eddie Byrom unbeaten at 22 without loss from 11 overs.
When spinner Jack Leach was ruled out of the series due to injury last month, Dawson was tipped by many as one of the replacement candidates given he is also a slow left-armer and more useful with the bat.
England instead persuaded Moeen Ali to to end his Test retirement at Edgbaston but when a blistered finger ruled him out at Lord’s, it was teenage leg-spinner Rehan Ahmed who was drafted into the squad.
Dawson, who played the last of his three Tests in July 2017, responded by taking 12 wickets after scoring a century in Hampshire’s LV= County Championship innings win over Middlesex last month.
However, the 33-year-old was adamant a remarkable performance was not a retaliation to the England selectors following his snub, having decided long ago to channel his energies into what he can control.
He told the PA news agency: “I didn’t even think about it. Test cricket has not been on my mind for a number of years. I’ve never expected to play for a long time and it’s not something that I worry about.
“Playing for England isn’t the be-all and end-all for me any more, it’s not healthy to worry about that, I did that way too much earlier in my career and that certainly affected performances.
“It’s just wasting energy. Now it’s about enjoying my cricket and if you do that, you hopefully do well and if that leads to playing for England then great but if not then I’ll enjoy playing for Hampshire.”
Dawson will be bidding to make history with Hampshire in the Vitality Blast at Edgbaston this weekend, where they can become the first team to retain their title and claim a record fourth crown.
Dawson, alongside James Vince and Chris Wood, have been mainstays in Hampshire’s success, especially in the shortest format where on Saturday they will be competing in their 10th Finals Day in 14 editions.
Vince has been central to their success this year, topping the tournament run-charts with eight 50-plus scores in 15 matches, averaging 65.7 with a sparkling strike-rate of 154.95.
Dawson said: “The older Vincey’s getting, the better he’s getting. He’s so consistent not only in T20s but in all formats.
“Any time he’s at the crease, it relaxes the changing room and the opposition knows he’s the big wicket to get. As long as he’s out there it gives the changing room huge confidence.
“But as a group we don’t want to put extra pressure on him and him feeling like he has to get the runs. We know that we can’t just rely on him to always get the runs, it’s down to everyone else as well.”
All four teams from the South Group won their quarter-finals at the expense of their northern rivals to get to Birmingham, where Hampshire will play Essex before Somerset take on Surrey.
The winners are then scheduled to meet on Saturday evening – although the forecast rain means there are concerns about spilling over into a reserve day for just the second time in the event’s history.
Hampshire did the double over Essex in the group stages but Dawson was adamant that will have no bearing on this weekend.
He added: “The two games in the group stages are completely irrelevant. It means absolutely nothing.”
Vince needed just 48 balls to amass 103, hitting eight sixes and the same number of fours, in a total of 214 for eight before Dawson took four for 21 as the home side collapsed to 96 all out in 14.1 overs at Chelmsford.
Tom Kohler-Cadmore plundered an unbeaten 64 to help Somerset strengthen their position at the top of the South Group with a nine-wicket demolition of struggling Middlesex.
Kohler-Cadmore, who hit four sixes – the last of them to win the match – and seven fours, and Tom Abell with 25 not out eased the home side over the finishing line with 39 balls to spare at Taunton after the visitors were bowled out for just 136 in 18.4 overs.
Tom Smith dispatched the first ball of the final over for four as Gloucestershire edged to a two-wicket victory over high-flying Surrey in a low-scoring thriller at Bristol.
Only opener Grant Roelofsen, Oliver Price and James Bracey made it past 20 on a difficult pitch, but the hosts, who needed two off the last over, managed to chase down the visitors’ 124 for nine despite England seamer Sam Curran’s three for 20.
David Payne and Matt Taylor had both earlier taken three wickets with Jamie Smith’s knock of 29 the biggest batting contribution in the match.
Colin Ingram and Chris Cooke staged an unbeaten stand of 109 to ease Glamorgan to a seven-wicket win over Kent inside 17 overs.
The pair came together in the ninth over with the score on 82 for three in response to Kent’s 189 for six – due in large part to Tawanda Muyeye’s 62 – and were still there at the finish, Ingram making a 32-ball 63, including 10 fours and a six, and Cooke 46.
Michael Bracewell and Adam Hose both hit half-centuries as Worcestershire blew away Nottinghamshire by 56 runs to go top of the North Group.
Bracewell, who put on 98 with skipper Brett D’Oliveira for the first wicket, made 55 and Hose an unbeaten 51 in an impressive 226 for five.
Alex Hales led a Notts charge with 71 from 35 balls, but largely without support as D’Oliveira ripped the heart out of their reply with four for 11 in his two overs and Pat Brown took four for 25 as they were dismissed for 170.
Wayne Madsen’s unbeaten 71 laid the foundation for Derbyshire to see off previous leaders Birmingham Bears by 17 runs.
Madsen hit 12 fours with Tom Wood adding a quick-fire 39 from 19 balls in a total of 174 for five, and they were backed up by bowlers Zaman Khan and Zak Chappell, who finished with three for 34 and three for 32 respectively as the visitors reached 157 for nine.
Chris Lynn smashed an unbeaten century as Northamptonshire beat Leicestershire by eight wickets in the battle of the bottom two.
Lynn thumped five sixes and 13 fours on his way to 110 from 68 balls to see his side to victory on 168 for two with seven deliveries to spare.
Leicestershire had posted 164 for eight with Ben Sanderson and Andrew Tye helping themselves to three wickets each.
A third-wicket partnership of 54 between Michael Jones and Ollie Robinson provided the backbone for Durham as they completed a comfortable six-wicket win over Lancashire at Chester-le-Street.
Jones’ 43 and 39 for Robinson set up Ashton Turner and Wayne Parnell to see the home side over the line with 10 balls remaining after Parnell, Bas de Leede, Ben Raine and Nathan Sowter had taken two wickets each to help restrict Lancashire to 152 for nine.
England’s dismal World Cup seems set to usher in a changing of the guard for the ODI side and Ahmed may have more of a role to play, even if Adil Rashid remains the country’s premier white-ball spinner.
Ahmed has impressed in seven appearances in national colours across all formats since last December and joins Rashid in being named in the ODI and T20 squads for next month’s trip to face the West Indies.
The 19-year-old links up with England after a lean domestic summer but Dawson is a huge admirer of his fellow spin bowling all-rounder and is certain he will flourish if England persevere with him.
“Rehan’s very young so you’ve got to give him a bit of time – he’s nowhere near the finished article,” Dawson told the PA news agency.
“I played with him last winter and I think he’s a very good bowler. You’ve just got to be patient with him. Spin bowling isn’t easy in England, you don’t get conditions that suit very often.”
Dawson subscribes to the notion spinners get better as they grow older and he has the numbers to back it up after taking 49 wickets at 20 to go with 840 runs at 40 in this year’s County Championship.
His form for Hampshire – where he was an ever-present for the matches in which he was available – warrants an England recall with a five-match Test series against India to come, starting in January.
Dawson has long since stopped worrying about his fringe status for England in all formats but the 33-year-old believes he is a superior player than when he earned the last of three Test caps in July 2017.
“Without a doubt,” he said. “I was only 27 then. I certainly think I’m a better player now. I’ve played a lot more cricket and in a lot more pressure situations. I understand that side of the game more.
“In red-ball cricket my bowling has improved every single year. I’d say that’s a huge thing that has improved. It’s going to be very hard to beat what I’ve done this season.
“There’s not much more I can do than what I’ve done this year. I’ll keep trying to work hard, keep trying to improve but I’m very realistic that the season I’ve just had doesn’t come around too often.”
A difficult conundrum awaits Dawson if England do make overtures for him as he has already committed to a lucrative stint in South Africa’s SA20, which overlaps with a couple of Tests of the India tour.
The canny slow left-armer would be a valuable inclusion on the turning tracks of India but any England return would likely be brief and he does not have the safety net of a central contract to fall back on.
Dawson is a regular in the high-paying T20 franchise leagues and, with England’s blessing, he was among a group of players to miss a tour of Bangladesh to play in the Pakistan Super League earlier this year.
“Don’t get me wrong, everyone’s desperate to play for their country but it also gets to a point where financially, you have to take that into consideration,” he added.
“As a player, for someone in my situation who hasn’t got a central contract – I certainly didn’t expect one – I’m not getting younger now, you have to make money.
“There’s so many competitions now you can play in. It’s brilliant to be a player now and hopefully I can play for a few more years and try to continue to perform.”
Leus du Plooy, with an unbeaten 40-ball 63, Tom Banton (38) and Tom Abell, unbeaten on 20, saw Dubai Capitals to victory at 139-1 with 25 balls to spare, after Gulf Giants, the team of West Indians Shimron Hetmyer and Carlos Brathwaite, were restricted to 138-6 from their allotment. Captain James Vince led the Giants from the front with a 53-ball 58, including four fours and two sixes, but lacked the necessary support, as Usman Khan (21) and Chris Jordan (30), were the next best scorers.
Holder, who was among five Capitals bowlers with a wicket apiece, ended with one for seven in two overs. By virtue of their win, Dubai Capitals booked a date with Nicholas Pooran's MI Emirates to decide the champions of this second edition of the tournament.
Scores: Gulf Giants 138-6 (20 overs); Dubai Capitals 139-1 (15.5 overs)
After suffering a 45-run defeat to MI Emirates in Qualifier 1, Gulf Giants would have hoped for better fortunes on this occasion, but those hopes were dashed as they lost Khan, Chris Lynn (zero), Jordan Cox (two) and Jamie Smith (zero), with just 40 runs on the board.
Hetmyer (eight), also had a brief stay in the middle, but despite the setback, Vince pushed on with some expansive shots that added some respectability to the innings before he eventually holed out to Powell off Olly Stone with the score at 117-6.
Jordan then smashed two sixes and a solitary four in his 29-ball knock, while Jamie Overton added 12 runs to the total in a six-ball cameo.
With just 139 to get, Plooy and Banton went on the charge in a 98-run opening stand, which all but signalled the writing on the wall for Gulf Giants. Banton had four boundaries in his run-a-ball 38, before he fell to Liam Dawson.
Abell joined Plooy, and the two posted an unbeaten 41-run stand for the second wicket to push the Capitals across the line. Plooy had five fours and three sixes in his knock, while Abell had two boundaries and a solitary six.
Powell and Holder will rub shoulders with fellow West Indians, Pooran, Dwayne Bravo, Kieron Pollard and Akeal Hosein, in the showpiece contest on Saturday.
