Sri Lanka managed to score 154 runs. They lost 6 wickets but Charith Asalanka is still at the crease. He is in good form now. If he stays at the crease, Sri Lanka will be able to collect more than 220 runs. Sri Lanka's current run rate is 4.12. I don't think Sri Lanka will win if they score less than 250 runs. The pitch is batting-friendly. Yet both parties are now unstable. These cannot be predicted in advance.
Both teams found it hard to score in the match. Maybe it wasn't a batting friendly pitch. Sri Lankan team hasn't given a big target, but South Africa lost the match by 78 runs. They lost all of their wickets in 125 runs. Finally Sri Lanka won a ODI series after so long. It's really hard to make the prediction when both teams start the game with few many new players.