Cardiff (United Kingdom) (AFP) - Afghanistan off-spinner Mohammad Nabi ran through a panic-stricken Sri Lanka top order in the World Cup on Tuesday with an astonishing spell before rain stopped play.Sri Lanka came out of the blocks quickly under leaden skies in Cardiff, reaching 144 for one before the halfway point of their innings and were on course for a morale-boosting big score against their unfancied opponents.But Nabi, who had earlier removed captain Karunaratne for 30, turned the match in the Welsh capital on its head, with three wickets in five balls as Sri Lanka slumped to 146-4.Shell-shocked Sri Lanka kept on losing wickets at regular intervals, with extras the second top-scorer when rain stopped play after 33 overs.