Last Updated: 18/03/12 5:03pm
Big, big decision as the referee opts to book Stokes for diving inside the penalty area. The Irish international is livid, he's sure he's been tripped! Stokes goes into the book for simulation.
Forrest is back on but severely limited as his hobbles around. Four minutes will be added for Celtic to take this into extra-time.
Samaras strikes a text-book volley on target but Bell denies him, and produces another save from the follow up. Whatever happens now, the Killie keeper has been the man of the match.
Celtic have just make their final change and Forrest looks in real pain. The Bhoys are a goal down and a man down with three minutes of normal time remaining.
Celtic act promptly, taking off Ledley for Commons. Meanwhile, Sissoko is replaced by Kroca for Killie.
Blimey, who'd have thought it before this game? Killie are five minutes from winning the League Cup if they can hang on here, thanks to a bullet header from substitute Van Tornhout.
Stokes strikes it into the wall once more and shows his frustration. Meanwhile, Killie break but Celtic get back in huge numbers to win back possession. Fantastic stuff this!
Mulgrew, not for the first time today, streams through the Killie defence on a mission to score, but his last touch lets him down and he overruns the play.
Hooper didn't have the best of days, really, which may have stemmed from that early miss when gifted a sitter.
Forster comes way off his line to claim a high ball, and bundles through Nelson in the process. Play is halted for a moment as he receives treatment.
Forster fumbles a near-post shot and Killie have a corner, suddenly the underdogs are full of life again.
Kelly chests and strikes the ball on the half-volley, but he cuts across it and can only watch as it glides high and wide. Decent effort, though.
Celtic have raised the level a little bit over the past few minutes, can Killie keep them out or perhaps even hit them on the break? We've just 18 minutes left of normal time.
Mulgrew's corner is met well by Wanyama but Bell, once again, will not be beaten easily and tips over for another Celtic corner.
Mulgrew, for me Celtic's best player today, feeds Ledley, who's control lets him down inside the box. He's another who ha't had the best of days.
Shiels fails to control when having the upper hand over Celtic's centre-backs. It ha't happened for the Northern Ireland international today.
Celtic are getting closer and it's Stokes this time who is foiled by Bell, who is now sporting a peaked cap to block the Glasglow sunlight.
Ledley receives the ball with his back to goal, swivels and screws his shot two-foot wide of goal. It was an opening, and he could have taken it with less urgency.
Sissoko nods wide on the turn when unmarked, he should have done better in all honesty. Another chance wasted by Killie.
Stokes fires directly into the wall and claims, rather tamely, for another handball to cover his embarrassment.
Mulgrew drives forward, drawing a handball from Fowler, and Stokes is eying up a shot from the 25-yard free-kick.
Celtic start with real intent and Forrest charges into the area but takes a heavy touch before cutting back into the waiting arms of Bell.
The sides are out for the restart. Let me know your thoughts throughout the second-half by e-mailing firstname.lastname@example.org or Tweet me @caseyja here.
So, chances at either end in a genuinely open first half. Celtic have come the closer, but Cameron Bell has been in inspired form for Killie. Forster ha't been bad either, let's hope for more of the same in the second-half.
Half-time at Hampden Park, where it's been an entertaining yet goalless first-half in the Scottish League Cup final.
Big chance for Killie as Matthews loses possession in front of goal, it eventually comes through to Heffernan, but he's closed down by the quick-thinking Forster.
Celtic are finishing the half the strong - Killie will take the whistle now, but they've been impressive.
Harkins picks out Shiels with a pinpoint pass from the flank, but Matthews gets back well to make the challenge.
Brown produces what can only be described as a thunderbolt from 25-yards, with Bell producing another unbelievable save to tip over the powerful strike!
Celtic win another corner but Mulgrew's delivery is too deep this time and Celtic are forced away from goal, but still in possession.
Forrest comes close for Celtic with a beautifully bent effort, but Hooper throws himself at it and is subsequently flagged offside.
The delivery comes in and Sissoko meets it with a thumping header, which is cleared off the line by Stokes! We have quite a game on here folks.
Mulgrew's delivery is headed clear and Killie break, with Shiels forcing Forster into a low parry wide. Killie have another corner.
Celtic are encouraged by that chance if nothing else, back they come with another wave of attacks...
Brilliant play all around almost creates the opening goal - Brown creates space for a cross after some fantastic footwork, his delivery is just as good, and Stokes meets it with a text-book header, only to be denied by Bell, who is at full stretch in getting one hand to it.
Stokes holds on to possession with excellent balance, but eventually loses out without spotting the free run of Hooper to his right.
Sissoko does well to prevent a Celtic corner, he shows no signs of a dip in confidence after that early blunder, which went unpunished.
Shiels goes agonisingly close for Killie, dragging a 20-yard effort just wide of the far post with Forster rooted to the spot!
Buijs picked up a knock during those back-to-back corners of Killie's, and is unable to continue, with Chris Johnston his replacement.
Celtic are a little rattled by this Killie spell, with Neil Lennon ordering restructures from the bench.
Shiels whips in a fantastic delivery, but it's just too high for Sissoko. Rogne got the last touch, and Killie have another corner on the opposite flank.
Harkins finds room on the flank and pulls back towards Heffernana in the centre, but Rogne puts the ball behind for Killie's first corner of the game.
Killie are slowly regaining their confidence after some early jitters, building from the back with patience.
Shiels streams forward in a Killie counter,, but his charge is brought to a halt by Mulgrew, who has impressed in the opening stages.
Ten minutes have passed and the big moment of the game was Hooper chance from Sissoko's mishap. You could argue that the Celtic striker was even more casual with his finish than the Killie defender was with his pass.
Shiels takes on the Celtic defence but perhaps picks the wrong option in looking for Heffernan. Celtic regain possession from the loose ball.
Celtic win another corner and Mulgrew delivers towards Wanyama, whose downward header is scrambled clear.
Stokes finds room for a cross on the edge of the box, but Killie are positioned well in the centre to deal with the threat.
'Important game for both sides. Im sure the Bhoys will win and get one step closer to complete the treble!!! C'mon Celtic!!!' Says Balint from Ireland.
Brown strides forward with superb determination, but he's forced to settle for a corner. It's the first of the game.
Almost a disaster for Killie as Sissoko is too casual, having his pass intercepted by Hooper right in front of goal, but Bell is off his line sharp to deny the striker!
Fowler lofts a pass through towards Heffernan but Rogne fends off the challenge, allowing Forster to collect.
Celtic gain possession for the first time and Brown tries to stamp his authority with a powerful drive from around 30 yards, which bends high and wide.
Stokes and Hooper have 40 goals between them this season, can Killie keep out Celtic's prolific frontline?
The sides are making their way out on to the field for the pre-match formalities. Both are wearing their away kits. Celtic in white, Killie in yellow.
So, Heffernan makes the starting line-up for Killie, but there's only a place on the bench for Celtic's Ki. What do you make of the line-up? Let me know by e-mailing email@example.com or Tweet me @caseyja here.
Celtic: Forster, Matthews, Rogne, Kelvin Wilson, Mulgrew, Forrest, Brown, Wanyama, Ledley, Hooper, Stokes. Subs: Zaluska, Samaras, Cha, Commons, Ki.
Kilmarnock: Bell, Fowler, Sissoko, Nelson, Gordon, Kelly, Buijs, Harkins, Hay, Shiels, Heffernan. Subs: Letheren, Dayton, Kroca, Johnston, Van Tornhout.
Of course, Celtic beat Killie in the Scottish League Cup final 11 years ago, with Henrik Larsson scoring a hat-trick that day. It was Neil Lennon's first trophy as a Celtic player.
While we wait for the team news to drop, why not eye up Sky Bet's odds ahead of kick-off? The Bhoys are, of course, clear favourites at 2/7. But you can back a draw at 4/1 while Killie are a long 10-1 shot.