The South Africans triumphed in a rain-hit semi-final against World Champions Sri Lanka and will now play India or the West Indies in Sunday's decider.

The match was reduced to 39-overs-a-side after the National Stadium in Dhaka suffered a drenching.

And Sri Lanka's decision to field after winning the toss looked to be paying off when South Africa were reduced to 87-4 by the 17th over.

Nuwan Zoysa celebrates dismissing Nicky Boje

Tall left-arm seamer Nuwan Zoysa made the early breakthroughs, dismissing pinch-hitters Nicky Boje (28) and Mark Boucher (0).

But skipper Hansie Cronje (20) helped Kallis add 81 for the fifth wicket.

Kallis plundered five fours and five sixes in his 100-ball innings to help South Africa set a formidable target for their opponents.

The rain then returned and Sri Lanka were set a revised target of 224 from 34 overs.

But South African bowlers Steve Elworthy and Pat Symox chipped in with three wickets each to send Sri Lanka into deep trouble.

The innings was swiftly mopped in the damp conditions up as Sri Lanka were dismissed for a lowly 132.

Scorecards:

South Africa innings:
M Rindel c Jayasuriya b Vaas 8
D Cullinan lbw b Dharmasena 30
N Boje c De Silva b Zoysa 28
M Boucher c Mahanama b Zoysa 0 J Kallis not out 113
H Cronje c Atapattu b Chandana 20
J Rhodes c Atapattu b Murlitharan 0
P Symcox c Atapattu b Chandana 11
D Benkenstein not out 18
Extras (b1, lb6, w3, nb2) 12
Total (for seven wickets, 39 overs) 240

Fall of wickets: 1-12, 2-55, 3-57, 4-87, 5-168, 6-181, 7-196

Bowling: Vaas 6-0-33-1, Zoysa 6-0-34-2, Dharmasena 7-0-37-1, Murlitharan 6-0-48-1, Jayasuriya 6-0-42-0, Chandana 8-0-39-2

Sri Lanka innings:
S Jayasuriya b Elworthy 22
R Kaluwitharana c Cronje b Elworthy 9
C Vaas c Rhodes b Cronje 18
A De Silva c Boje b Elworthy 5
M Atapattu c Cullinan b Symcox 19
A Ranatunga c Boucher b Cronje 4
R Mahanama c Crookes b Symcox 10
U Chandana lbw b Symcox 20
K Dharmasena c Cullinan b Crookes 6
N Zoysa not out 2
M Murlitharan absent hurt
Extras (lb4, w10, nb3) 17
Total (for nine wickets, 23.4 overs) 132

Fall of wickets: 1-19, 2-40, 3-48, 4-74, 5-80, 6-96, 7-113, 8-125