Kevin O'Brien continues and continues to concede boundaries. Mupariwa may be the number 10 but he hits very cleanly to smash two consecutive fours through extra cover before hammering a six over deep square leg. And like that, Zimbabwe are favourites. Amazing!

Tawanda Mupariwa comes out to try and save Zimbabwe. Mooney concedes a single to Chakabva but then bowls a crucial dot ball to the new man. Great over.

Alan Lewis
Ex-Ireland captain on BBC Test Match Special

"If you ever wanted a man under a catch, it's William Porterfield. In cricketing terms, it was an easy catch. But even the way he took it, you can see there's so much pressure."

Ireland strike again to edge themselves closer to victory. Mooney is hammered down the ground by Panyangara but straight down the throat of captain Porterfield, who makes no mistake with the catch.

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Image source, Getty Images

This is an incredible game. Tinashe Panyangara is the new batsman. Are we going to see another twist?

Charles Dagnall
BBC Test Match Special

"A brilliant innings from Sean Williams - an incredible effort to get Zimbabwe close."

Alan Lewis
Ex-Ireland captain on BBC Test Match Special

"I have to confess, I thought it was six from the moment it hit the bat. That is a fantastic piece of work but John Mooney. What a piece of judgement. He was within a whisker..."

What drama! Chakabva hits O'Brien for four from the first ball of the over before the bowler almost runs out Williams at the striker's end with a throw that misses by inches. Then, Williams hammers what initially looks like a certain six but dips and is caught on the very edge (about an inch judging by the replay) by Mooney. The game swings back in Ireland's favour. And what a game this is!

Scorecard

Image source, Getty Images

Porterfield turns back to his top man Cusack and is rewarded with an initially economical over that is let down by Niall O'Brien who stupidly kicks the ball at the stumps as Zimbabwe attempt a quick single and propels the ball for two more over-throws.

Alan Lewis
Ex-Ireland captain on BBC Test Match Special

"Williams was a great foil for Taylor and Chakabva has been a great foil for Williams. But with the run rate required at 10, it's evenly poised. The one thing you can say about Ireland is they do entertain."

Williams is the main man for Zimbabwe. After a tidy first three balls (going for three) from McBrine, the batsman drops to one knee and hammers a six into the stands behind backward point. Chakabva hasn't hit cleanly yet but he is running hard and dives to beat a throw at the striker's end for another vital single.

Andrew Samson
BBC Test Match Special statistician

"Sean Williams has reached 80 for the first time in his ODI career, having made eight scores in the 70s before this game."

Ireland were 271-3 at this stage. However, they had more batsmen at their disposal and it is a lot harder chasing in these circumstances. Williams is doing his best to keep the Zimbabwe chase alive as he whips a ball off Mooney off his hips for four during an over that goes for 11.

Ben Willmott: Every time I ask my boss a question at work and wicket falls... For Ireland's sake I need to ask more questions.

The new man is Regis Chakabva, who averages 16.39 with a strike-rate of 54.47. Not the stats of a man who is likely to finish this game successfully for Zimbabwe. Looks like it is down to Williams. The run-rate required is exactly 10 an over.

Karen Lynch: Oh my word, what a good 'can they/can't they' match. Wouldn't want to call this one.

Brett Geeves
Ex-Australia pace bowler on BBC Test Match Special

"If the reverse-sweep comes off you look like champion; if it doesn't you look like a grade player. Ervine was batting nicely - he didn't need to take risk; all he needed to do was rotate the strike."

The costly O'Brien is taken out of the attack and replaced by McBrine, who makes a big impact by dismissing Ervine. Questions have to be asked of the batsman. Was there really any need to try and reverse sweep? The fact that it went straight to the hands of Niall O'Brien proves not.

Scorecard

Mooney does a superb job for Ireland with a succession of full deliveries that, despite their most creativ efforts, the Zimbabwe pair are unable to get away. Just the three runs from the over. That is gold dust at this stage of such a game.

Kevin O'Brien continues to leak runs. Four runs come from his first three balls before the fourth is pulled for four by Ervine. The big bowler tries to make amends by collecting a prod from Ervine and running out Williams at the striker's end but the batsman is in, as a replay confirms. To add to the bowler's woes his final ball is punched down the ground by Williams and is allowed to cross the boundary by a misfield at long-on. Ireland can ill afford such generosity.