Townsville (Australia), Aug 19 (IANS) Australia and South Africa continued their unbeaten run in the ICC U-19 Cricket World Cup with contrasting wins in their respective quarterfinals here Sunday.

Defending champion Australia earned a hard-fought five-wicket win over Bangladesh. Aussie captain Will Bosisto led from the front as his side overcame the loss of early wickets to chase down Bangladesh's total of 171.

South Africa, on the other hand, were clinical in their performance against England in the other quarterfinal registering a 103-run victory. South Africa's Prenelan Subrayen was the star with the ball taking four wickets.

Australia and South Africa will now clash in the first semifinal Tuesday at the Tony Ireland Stadium here.