SL 141-8published at 19.3 overs
Maheesh Theekshana backs away and Anrich Nortje follows him - but it flies off the outside edge and goes fine for four!
South Africa win with one ball to spare
Hasaranga takes hat-trick
Bavuma 46 (46), Miller 23* (13)
Sri Lanka 142: Nissanka 72 (58)
Shamsi 3-17, Pretorius 3-17
De Kock returns for South Africa
Takes knee before match
Super 12s, Group 1, Sharjah
Thomas Mallows and Matthew Henry
Maheesh Theekshana backs away and Anrich Nortje follows him - but it flies off the outside edge and goes fine for four!
Good running from the Sri Lanka batters as the scamper through for two off a inside edge into the onside from Maheesh Theekshana.
Anrich Nortje with the final over as Sri Lanka run a leg bye off his first ball.
Jonathan Agnew
BBC cricket correspondent on Test Match Special
Can Sri Lanka get 10 runs from this over?
Dwaine Pretorius ends with 3-17 from his three overs - including the key wicket of Nissanka.
What can Sri Lanka get in the final over?
Jonathan Agnew
BBC cricket correspondent on Test Match Special
That is the one South Africa really wanted.
It was an excellent innings from Nissanka.
Alex Hartley
England spinner on BBC Test Match Special
Sri Lanka's spinners will be excited to bowl on this wicket. It is an exciting position to be in but they will think they should have got back to 145.
Nissanka c Nortje b Pretorius 72 (SL 131-8)
A fine innings from Pathum Nissanka is finally over!
It is a slower ball from Dwaine Pretorius and Nissanka can't quite time the pull into the onside and Nortje takes the catch on the midwicket boundary.
Andy Zaltzman
BBC Test Match Special statistician
When teams batting first have scored under 140 in this tournament they have lost every one.
Karunaratne c van der Dussen b Pretorius (SL 131-7)
Dwaine Pretorius is sticking with his wide offside line and Chamika Karunaratne tries to drag him high into the onside.
He's unsuccessful though as van der Dussen comes in from the long-on boundary to take a smart catch.
Andy Zaltzman
BBC Test Match Special statistician
This is Nissanka's highest score in T20 internationals.
Alex Hartley
England spinner on BBC Test Match Special
Because the pitch is slow the bouncer doesn't get up as much as Rabada is expecting. Nissanka could hook it for four.
Jonathan Agnew
BBC cricket correspondent on Test Match Special
I tell you what... Nissanka is playing well here.
Shot!
Back-to-back fours from Pathum Nissanka, the second a lovely drive through extra cover.
He moves onto 72.
That will help! Pathum Nissanka is onto Kagiso Rabada's delivery in a flash as he clubs it over long-on for a six.
Andy Zaltzman
BBC Test Match Special statistician
Of the 12 teams in this tournament, Sri Lanka, in the last three years, are the slowest-scoring team.
South Africa continuing to take wickets at crucial moments to stem Sri Lanka's momentum. Youd think Pathum Nissanka needs to stay for the duration if they are to reach a decent total.
Jonathan Agnew
BBC cricket correspondent on Test Match Special
Rabada has had a good day in the field.
Shanaka c Rabada b Pretorius (SL 110-6)
South Africa respond!
Shanaka attempts to slog Pretorius into the offside but he can only pick out Kagiso Rabada on the cover boundary who takes a smart catch.
Jonathan Agnew
BBC cricket correspondent on Test Match Special
This planned worked in the last over but when you become predictable you really have to change your plan.