100 for Alastair Cookpublished at 30.5 overs
Essex 194-3
There it is for the former England captain.
A century with a four down the ground and it's come from 95 balls.
Patel & Mullaney hundreds put Notts in final
Notts chase 371 - a record in England
Essex made 370-5; 113 off last 10 overs
Centuries for Cook & Ten Doeschate
Notts to play Worcs or Surrey in Lord's final on 1 July
Adam Williams
Essex 194-3
There it is for the former England captain.
A century with a four down the ground and it's come from 95 balls.
Cook 96, Ten Doeschate 10
Jake Ball's latest over is a tidy bit of seam bowling as six singles come from it.
Alastair Cook now just a boundary away from a century...
Essex 186-3
Niall O'Brien
Ireland wicketkeeper on BBC Radio 5 live sports extra
Ryan ten Doeschate has been a great find for Essex over the last 10 or 15 years.
Every year he does well with the bat, the ball, he's a great fielder, very competitive and now leader of the pack.
Cook 93, Ten Doeschate 7
A single off the rest of that very eventful Stuart Broad over.
Essex with a platform here, but Notts keeping themselves in it.
Cook 93, Ten Doeschate 6
Essex captain Ryan ten Doeschate is the new man in at five.
Stuart Broad bowls him a no ball first up and then Ten Doeschate hammers the following free hit right down the ground and out of it over the fence for six runs!
Essex 173-3
Wicket-time again for Nottinghamshire at a crucial time too.
Lovely bit of classic seam bowling by Stuart Broad as he gets one to bounce a bit more outside off stump and finds a thin edge of Ravi Bopara's bat.
Chris Read with the simple catch with the gloves.
Essex 172-2
Niall O'Brien
Ireland wicketkeeper on BBC Radio 5 live sports extra
Alastair Cook is a very tall man, not stocky but strong. When he bats he just looks in command and dominates the area.
From ball one he's been totally in command.
Cook 92, Bopara 16
Jake Ball back into the attack and he replaces Samit Patel from the River End.
Alastair Cook into the 90s as he pulls a short ball out to the rope and Alex Hales' despairing effort with a dive and outstretched arm isn't enough to stop it going for four.
Nice slower ball from...Ball as Cook mistimes an attempted pull later in the over.
Cook 66, Bopara 15
Stuart Broad continues from the Hayes Close End at Chelmsford.
He was held back for a while by Chris Read but is now into his fifth over. He's charging in at this stage and you feel he really fancies Alastair's Cook's wicket.
Good over with just a couple off it as the players take a drinks break.
#bbccricket
Rob Carrick: Cook back in the ODI set up? Why not, scored a shed load of runs at a decent pace & and no one has nailed their place down.
Steve Davies: Cook 82 from 72 and he cannot get in ODI team doing it against ball Broad, Pattinson and Gurney.
Lots of calls for Alastair Cook to return to the England one-day fold. I think that ship may well have sailed I'm afraid.
Cook 87, Bopara 14
Boundaries continue to flow as Samit Patel gets hit down the ground for four by Ravi Bopara.
Alastair Cook pushes two deep into the legside and then keeps the strike with a single off the last ball of the over. Eight runs from it.
Thank Gary, top stuff with the new ball and in the opening powerplays there.
Cracking game this so far with plenty of good cricket on show.
How much will Essex feel they need to be safe against this powerful Notts line-up?
Cook 84, Bopara 9
How easy does Alastair Cook make it look off his legs? He could find a single with a breadstick.
It's another decent over for Notts and Stuart Broad though. Just four off it following a bit of a misfield from Steven Mullaney.
And with that, I'm now going to hand over to my colleague Adam Williams to take you through the second half of the Essex innings.
Cook 83, Bopara 7
Tight lines from Samit Patel. Just a single apiece for Alastair Cook and Ravi Bopara.
It feels like a key phase of the game at the moment.
Cook 82, Bopara 6
Another boundary for Alastair Cook, straight down the ground off Stuart Broad.
It's a fascinating battle to watch between the England legends. Cook is fast approaching a 12th List A century here.
Cook 74, Bopara 5
Ravi Bopara is the new man in and is already in the boundary club with a fine sweep for four.
Six off Samit Patel's fifth over, and that all-important wicket of Tom Westley.
Essex 136-2
Where on earth did that come from? It's probably the worst ball he's bowled and it's brought a wicket.
Samit Patel pitches one halfway down the wicket but Tom Westley can only spank it straight to Brendan Taylor.
It's a good low catch from the Zimbabwean, but you've got to be biffing those to the boundary.
Essex 136-1
HUGE appeal from Stuart Broad after he strikes Alastair Cook on the pad.
It's pitched outside leg stump Broady - WAAAAY outside.
Bit of desperation there from the England paceman, but it's a fine over conceding just two.
Essex 134-1
Ebony Rainford-Brent
Ex-England batter on BBC Radio 5 live sports extra
Let's say Alastair Cook picks his scoring rate up in one-day cricket over the next season while playing for Essex, is the door shut on his England chances?
Or because he shows such form, is it too good to ignore the number of runs he scores?
Cook 72, Westley 32
Slapped!
It's a really bad ball from Samit Patel - half-tracker - and Tom Westley smashes it away to the mid-wicket rope.
He's raced onto 32 off 21 balls.