Trego hobbles off injuredpublished at 16:06 BST 22 September 2017
Somerset 269 & 306 v Surrey 433 & 58-2 (13.1 overs)
Pete Trego comes off after landing awkwardly on his foot, or so it appeared at least.
Jack Leach comes on to bowl instead.
Final day of penultimate round of matches
Yorkshire chase 175 and beat Warwickshire
Surrey beat Somerset by six wickets
Sangakkara makes 35 in final innings at The Oval
Champions Essex beat Hampshire by 108 runs
Northants beat Notts to blow promotion race wide open
Get involved via #bbccricket
Felix Keith and Tom Garry
Somerset 269 & 306 v Surrey 433 & 58-2 (13.1 overs)
Pete Trego comes off after landing awkwardly on his foot, or so it appeared at least.
Jack Leach comes on to bowl instead.
Sussex 346 & 302 v Durham 385 & 131-9 (41.2 overs)
Durham's rain dance hasn't worked. The mopping-up process is under way at Chester-le-Street and Graham Onions and Brydon Carse will have to go back out soon.
Will there be a pot of gold (21 points for a win) at the end of the rainbow for Sussex? They need just one wicket.
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Somerset 269 & 306 v Surrey 433 & 56-2 (12.2 overs)
Dom Bess think he's got Kumar Sangakkara lbw on 10, but no.
The hosts need a further 87 runs to win. Somerset need eight wickets.
There are a minimum of 28.4 overs left.
Glamorgan 442 & 353-3 (80 overs) v Gloucestershire 399-8d
With poor light taking over, they've finally called it a day at Cardiff. Nick Selman ends unbeaten on 142 - one of six players to register career-best scores in the match on a flat pitch.
Both sides take 11 points for the draw.
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Nakul Pande: Sangakkara's batting for the last time at the Oval. I'm 200 yards away...and can't go. Grr.
If you are in south London, you know what to do.
Somerset 269 & 306 v Surrey 433 & 41-2 (9.0 overs)
Worth reminding you that Kumar Sangakkara's first innings score of 157 was itself larger than the target Surrey were set for this chase, 143.
They need another 102 to win.
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Jonathan Triffitt: 104 to win; plenty of opportunity for a ninth century from Kumar Sangakkara.
Wishful thinking Jonathan, but if there's one man that can do it...
With Essex having wrapped up the win in rapid time against Hampshire there is just one game ongoing as Surrey and Somerset battle it out at the Oval.
That's because both Glamorgan against Gloucestershire and Durham versus Sussex are delayed by the weather, with bad light in Cardiff and rain in Chester-le-Street.
We'll stay with the action in south London and let you know if play resumes.
Somerset 269 & 306 v Surrey 433 & 40-2 (8.0 overs)
Surrey are still 103 runs short of victory and they're living dangerously but Ryan Patel escapes two enormous appeals. The ball must have been pitching only just outside the line.
Somerset 269 & 306 v Surrey 433 & 39-2 (7.1 overs)
The great man Kumar Sangakkara gets a big round of applause as he walks out for the last time at the Oval.
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Somerset 269 & 306 v Surrey 433 & 39-2 (7.1 overs)
Game. On.
Mark Stoneman is gone. Somerset need eight more. Surrey still need a further 104 runs.
Essex beat Hampshire by 108 runs
Hampshire hadn't lost a County Championship game after enforcing the follow-on since 1992, when - you guessed it - Essex came back to win and secure their last title.
Hampshire take five points from the loss to move onto 140. Depending on Somerset's result against Surrey, they will go to Edgbaston next week eight or 13 points ahead of the Taunton side.
Somerset 269 & 306 v Surrey 433 & 38-1 (6.5 overs)
Somerset make the breakthrough, as BBC Radio 5 live sports extra commentary rejoins this match following Essex's win.
Rory Burns is caught off Craig Overton. Somerset need nine more wickets. Surrey need another 104 runs.
Edwards (c Foster b Cook) 11
That's it. And a nice way to finish, with Sam Cook completing a maiden first-class five-wicket haul, having number 11 Fidel Edwards caught behind. He has figures of 5-18. Essex extend their unbeaten run.
It's a terrible defeat for Hampshire, who made just 76 runs in 29.4 overs and will go to Warwickshire next week in danger of relegation.
Hampshire 254 & 64-9 (28.1 overs) v Essex 76 & 362
Hampshire have gone past Gloucestershire's 61 all out against Kent in April. Ian Holland (8 not out) and Fidel Edwards (7 not out) are approaching top-scoring territory for the hosts too. Happy days.
REACTION: Yorkshire beat Warwickshire by two wickets
Yorkshire coach Andrew Gale:
"It felt like Middlesex at Lord's all over again last year. The heart was racing, but luckily we were on the right side of the result. We're not home and dry yet but it still gives us a chance to stay in this division.
"We just have to go down to Chelmsford and continue some of the good work. I feel like we have played some really good cricket over the last three weeks. Had we played like that for the majority of the year, we wouldn't be where we are."
Somerset 269 & 306 v Surrey 433 & 25-0
Rory Burns and Mark Stoneman have started well for Surrey, who need a further 118 runs to win.
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Matt: Hampshire. Just wow. Despite 32 seasons of this I always underestimate the capability of you to spectacularly screw it up.
Paul Raghavan: Just putting it out there now Essex must be in with a shout of BBC Sports Personality team of the year!!
Hampshire 254 & 56-9 (25.4 overs) v Essex 76 & 362
Not really sure what to write now. Hampshire have lost another wicket. It's Kyle Abbott. He's been caught at point by Nick Browne off Neil Wagner, for some reason trying to drive on the up.
They're past their lowest ever total against Essex, but still five runs short of the lowest total of the season.
Somerset 269 & 306 v Surrey 433 & 1-0 (0.4 overs)
So, here we go... 41 overs on the way. Surrey need 143 for victory.