Steyn keeps South Africa alive

South Africa were once again indebted to Dale Steyn as his four wickets helped the Proteas claim a two-run win over New Zealand in Chittagong.

After losing their opening Group 1 clash to Sri Lanka, South Africa were staring another defeat in the face with the Black Caps requiring just seven runs to win off Steyn's final over.

But the pace king held his nerve brilliantly, dismissing Luke Ronchi and Nathan McCullum with his first five deliveries and then running out Ross Taylor with the final ball to spark wild celebrations from the men in gold and green.

Defeat was harsh on Taylor, who had led New Zealand's chase brilliantly with 62 off 37 balls, but he was unable to provide the finishing blow as he hit Steyn's final ball straight back at the bowler with three needed for victory.

While Steyn provided the late heroics with the ball, it was JP Duminy's fireworks with the bat that had earlier enabled South Africa to post 170-6 batting first.

Duminy cracked 86 not out off only 43 balls to help the Proteas post what turned out to be a winning total.

The left-hander found the rope 10 times and cleared it on three occasions as 70 runs were taken off the final five overs of a South Africa innings which had started slowly.

Tim Southee claimed two wickets, as did Corey Anderson, including the freak dismissal of Hashim Amla (41), who was caught and bowled after driving firmly back at the bat of non-striking partner Duminy before Anderson collected.

New Zealand appeared to be in command of the run-chase thanks to half-centuries from Kane Williamson (52) and Taylor, who hit Morne Morkel for three successive sixes in the 12th over.

But, through a combination of Imran Tahir (2-27) and Steyn, South Africa somehow clawed their way back into contention.

Tahir accounted for dangerman Brendon McCullum and Colin Munroe as New Zealand began to feel pressure and it was left to Steyn to hold his nerve at the death.