Tomas Domene (5th, 39th minutes) converted two penalty corners for Delhi SG Pipers, while Struan Walker (26th) and Victor Charlet (35th) were the goal scorers for Gonasika.
Jacob Anderson scored the fastest goal in the Hockey India League history, but it went in vain as the Hyderabad Toofans lost to Team Gonasika in the shootout.
Five of the Australian goals were field efforts while three were from the penalty corners. Australia earned eight PCs as against five of the South Africans.
Jean-Laurent Kierffer scored a brace as France stunned European champions Belgium 5-4 in a nail-biting encounter to enter the semi-finals of the ongoing Hero Junior Men's Hockey World Cup in Delhi on Thursday.
After New Zealand and Spain played out a 2-2 draw earlier in the day, World No. 20, the lowest ranked side in the competition, France needed an outright win to qualify for the cross-overs and they came out with intent to achieve the goal.
Agustin Mazzilli and Gonzalo Peillat scored a brace each to help Olympic champions Argentina eke out a 4-3 win over Spain, while New Zealand scrapped past France 2-1.
They looked on course to clinch all three points on offer but Govers Blake scored in the dying minutes for Australia as the two sides split points.
The triumph also took Germany to the top of FIH world rankings from the pre-tournament fourth place.
