Azmatullah Omarzai is late on a hook shot to Kasun Rajitha and it goes skyward towards deep mid-wicket.
Pathum Nissanka makes up plenty of ground and gets his hands to the ball with a spectacular diving effort, but the balls slips through his hands.
A tough chance. To rub salt in the wound Azmatullah pulls the next ball for four.
Post update
Lydia Greenway
Former England batter on BBC Test Match Special
Getty ImagesCopyright: Getty Images
Afghanistan have been the better side with bat and ball. This has been a bit of a batting masterclass at the moment.
Half-century for Azmatullah
Azmatullah Omarzai dabs Kasun Rajitha on into the off side and sprints to the other end to notch a run-a-ball fifty.
Two fours and three sixes.
He raises his bat, and gets a hug from his captain while his team-mates applaud.
Post update
Lydia Greenway
Former England batter on BBC Test Match Special
That's one of the shots of the day.
It was there to be put away, but in terms of aesthetics and technique it was a lovely looking shot.
Afg 214-3
Azmatullah Omarzai takes a brisk single with a clip to mid-on so he moves on to 49.
Hashmatullah Shahidi finishes Dilshan Madushanka's over with a crunching drive through the covers.
Afghanistan are in cruise control.
Post update
Charlie Taylor
Commentator on BBC Test Match Special
Sri Lanka seem to be out of ideas here.
Fifty for Hashmatullah
Dilshan Madushanka is driven through the covers for a single by Hashmatullah Shahidi.
He has a stoic half-century off 67 balls. His 18th fifty in ODIs.
The Afghanistan captain will want to be there at the end.
Afg 207-3
The occasional pressure-releasing wallop interspersed with clever farming of the strike has been the mantra of Afghanistan.
Here's one of the former from Azmatullah Omarzai from a little while ago.
Meanwhile, a slog sweep for four from Azmatullah off Maheesh Theekshana puts him on 48.
Afg 201-3
41 from 60 balls required for Afghanistan.
Hashmatullah Shahidi is one run away from a half-century.
Post update
Charlie Taylor
Commentator on BBC Test Match Special
Getty ImagesCopyright: Getty Images
Jonathan Trott is going to be a national hero in Afghanistan the way this tournament is going for them.
They are cruising at the moment.
Afg 200-3
A slower bouncer from Dilshan Madushanka and Azmatullah Omarzai top edges it, but the ball drops agonisingly short of Kusal Mendis.
Post update
Charlie Taylor
Commentator on BBC Test Match Special
Sri Lanka have lost control a bit here.
Post update
Lydia Greenway
Former England batter on BBC Test Match Special
This is an excellent shot, he just opened the blade slightly to beat extra cover. A really skilful piece of batting.
Afg 198-3
Kusal Mendis realises the game could be over before using Dilshan Madushanka closer to the death so persists with the left-arm seamer in search of a breakthrough.
However, Azmatullah Omarzai steps on the front foot and times a crisp punch through the covers for four.
Afg 193-3
A little too easy for Azmatullah Omarzai and Hashmatullah Shahidi as they knock Maheesh Theekshana into the gaps.
A bit of a resigned look to Sri Lanka in the field.
Five easy runs added to the total as we tick closer to the final powerplay.
Post update
Niall O'Brien
Ex-Ireland wicketkeeper on Test Match Special
Sri Lanka need a couple of wickets and sharpish because after that six last over Afghanistan are in complete control with both batters well set.
This is a big game for both sides and I still think there is going to be a twist in the tail.
Afg 188-3
A bit of swing and hope from Hashmatullah Shahidi to the final ball of Dilshan Madushanka's seventh over as a top edge from a pull shot sails over the boundary at fine leg for six.
It's not going to be Sri Lanka's day by the looks of it.
Post update
Niall O'Brien
Ex-Ireland wicketkeeper on Test Match Special
Azmat got very lucky there. It was very ungainly. It tells me he does not enjoy the short ball.
Post update
Charlie Taylor
Commentator on BBC Test Match Special
That was a chance. Azmat knew nothing about it.
Afg 182-3
Dilshan Madushanka with a short ball and Azmatullah Omarzai chips it up in the air.
The ball seems to hang there for an age. Azmatullah turns away fearing the worst.
But neither the bowler nor the fielder at short mid-on cannot get a hand to the ball and it plonks safely into the turf.
Live Reporting
Timothy Abraham
All times stated are UK
Azmatullah dropped on 52
Azmatullah Omarzai is late on a hook shot to Kasun Rajitha and it goes skyward towards deep mid-wicket.
Pathum Nissanka makes up plenty of ground and gets his hands to the ball with a spectacular diving effort, but the balls slips through his hands.
A tough chance. To rub salt in the wound Azmatullah pulls the next ball for four.
Post update
Lydia Greenway
Former England batter on BBC Test Match Special
Afghanistan have been the better side with bat and ball. This has been a bit of a batting masterclass at the moment.
Half-century for Azmatullah
Azmatullah Omarzai dabs Kasun Rajitha on into the off side and sprints to the other end to notch a run-a-ball fifty.
Two fours and three sixes.
He raises his bat, and gets a hug from his captain while his team-mates applaud.
Post update
Lydia Greenway
Former England batter on BBC Test Match Special
That's one of the shots of the day.
It was there to be put away, but in terms of aesthetics and technique it was a lovely looking shot.
Afg 214-3
Azmatullah Omarzai takes a brisk single with a clip to mid-on so he moves on to 49.
Hashmatullah Shahidi finishes Dilshan Madushanka's over with a crunching drive through the covers.
Afghanistan are in cruise control.
Post update
Charlie Taylor
Commentator on BBC Test Match Special
Sri Lanka seem to be out of ideas here.
Fifty for Hashmatullah
Dilshan Madushanka is driven through the covers for a single by Hashmatullah Shahidi.
He has a stoic half-century off 67 balls. His 18th fifty in ODIs.
The Afghanistan captain will want to be there at the end.
Afg 207-3
The occasional pressure-releasing wallop interspersed with clever farming of the strike has been the mantra of Afghanistan.
Here's one of the former from Azmatullah Omarzai from a little while ago.
Meanwhile, a slog sweep for four from Azmatullah off Maheesh Theekshana puts him on 48.
Afg 201-3
41 from 60 balls required for Afghanistan.
Hashmatullah Shahidi is one run away from a half-century.
Post update
Charlie Taylor
Commentator on BBC Test Match Special
Jonathan Trott is going to be a national hero in Afghanistan the way this tournament is going for them.
They are cruising at the moment.
Afg 200-3
A slower bouncer from Dilshan Madushanka and Azmatullah Omarzai top edges it, but the ball drops agonisingly short of Kusal Mendis.
Post update
Charlie Taylor
Commentator on BBC Test Match Special
Sri Lanka have lost control a bit here.
Post update
Lydia Greenway
Former England batter on BBC Test Match Special
This is an excellent shot, he just opened the blade slightly to beat extra cover. A really skilful piece of batting.
Afg 198-3
Kusal Mendis realises the game could be over before using Dilshan Madushanka closer to the death so persists with the left-arm seamer in search of a breakthrough.
However, Azmatullah Omarzai steps on the front foot and times a crisp punch through the covers for four.
Afg 193-3
A little too easy for Azmatullah Omarzai and Hashmatullah Shahidi as they knock Maheesh Theekshana into the gaps.
A bit of a resigned look to Sri Lanka in the field.
Five easy runs added to the total as we tick closer to the final powerplay.
Post update
Niall O'Brien
Ex-Ireland wicketkeeper on Test Match Special
Sri Lanka need a couple of wickets and sharpish because after that six last over Afghanistan are in complete control with both batters well set.
This is a big game for both sides and I still think there is going to be a twist in the tail.
Afg 188-3
A bit of swing and hope from Hashmatullah Shahidi to the final ball of Dilshan Madushanka's seventh over as a top edge from a pull shot sails over the boundary at fine leg for six.
It's not going to be Sri Lanka's day by the looks of it.
Post update
Niall O'Brien
Ex-Ireland wicketkeeper on Test Match Special
Azmat got very lucky there. It was very ungainly. It tells me he does not enjoy the short ball.
Post update
Charlie Taylor
Commentator on BBC Test Match Special
That was a chance. Azmat knew nothing about it.
Afg 182-3
Dilshan Madushanka with a short ball and Azmatullah Omarzai chips it up in the air.
The ball seems to hang there for an age. Azmatullah turns away fearing the worst.
But neither the bowler nor the fielder at short mid-on cannot get a hand to the ball and it plonks safely into the turf.