Bangladesh's pre-Cricket World Cup intention was to reach the semifinals for the first time.
That looks possible after they smothered a lacklustre South Africa and brought the four-day-old tournament alive in an easy 21-run victory at The Oval yesterday.
Bangladesh posted their highest one-day international total of 330-6 after being made to bat first, then restricted South Africa to 309-8 in front of an ecstatic crowd.
Losing by 21 runs flattered South Africa, who were as crushed as they were in losing the opener to England by 104 runs.
"We have done some upsets at World Cups but we want to prove something at this tournament," man-of-the-match Shakib Al Hasan said. "This is the way we wanted to start. We had the belief and now we need to keep up this momentum. The job has just started."