PERTH, Australia (AFP) - New coach Robbie Deans said pride saw his Australian team stun World Cup winners South Africa with a gutsy 16-9 win in a Test at Subiaco Oval here Saturday to blow the Tri-Nations wide open.

The Wallabies were rank-outsiders for the series and in their first match were facing a Springboks side full of confidence after a historic 30-28 win over the All Blacks in Dunedin last weekend.

However, in front of 41,838 fans the home side scored the only two tries of the match either side of half-time, with Berrick Barnes sealing the win in the final minute, nailing a drop goal from 25 metres.

The result also maintained Deans' perfect record since taking over, with four wins from as many Tests.

"The thing that I really took a liking to was the pride," he said.

"As a result of that pride, (there was) a willingness to engage and willingness to defend.

"There was some good carry and some good scrambling defence."

He said the second-half try by captain Stirling Mortlock, who dragged three Springboks defenders across the line, summed up Australia's determination.

The Wallabies were led by a superb performance from man-of-the-match Rocky Elsom.

In a strong defensive effort, they were able to match the powerful Springboks forwards and also capitalised on South African turnovers.

The South African camp were left lamenting missed opportunities and coach Peter de Villiers admitted his side just didn't execute as well as it should.

"We didn't foresee this," he said.

"We controlled a lot of the game, but all credit to the Aussies, they deserved it tonight."

For most of the first half, it was a dour defensive battle with plenty of kicking, with only Francois Steyn's penalty for the visitors in the seventh minute separating the sides.

But against the run of play, with the South Africans seeming on top, the Wallabies grabbed the lead just before half-time.

The home side hadn't created many genuine threats against disciplined Springboks defence, but in the 35th minute Lote Tuqiri capitalised on a Peter Hynes break to score the first try of the match in the corner.

Hynes, in just his fourth Test, broke through the South African defence, setting up a chain of passes through Nathan Sharpe, Matt Giteau and Adam Ashley-Cooper, ending with Tuqiri easily evading Jean de Villiers to dive over in the corner.

Although Giteau missed the conversion, the Wallabies gave the home crowd voice with a 5-3 lead at the break.

The Wallabies continued to rally when play resumed, and were quickly rewarded when Mortlock bustled over in the corner.

A chain of passes saw Mortlock drive across the line despite the efforts of three Springboks defenders and although referee Bryce Lawrence went upstairs for a video review, it merely confirmed the try and Australia held an unlikely 10-3 lead despite Giteau again failing to convert.

Both tries came on JP Pietersen's wing, the Wallabies clearly targeting what they believed was the weak point in the South African defence.

The lead was extended to 13-3 when Giteau found his range and converted in the 51st minute, but the 'Boks immediately answered with a penalty through Butch James.

With Mortlock off after a knock to the head, the Springboks inched back and were unlucky not to score in the 66th minute, when Bryan Habana lost the ball in a Ryan Cross tackle as he was grounding it for a try in the corner.

In the 69th minute, Steyn made it 13-9 when his penalty shaved the upright, but bounced through, before Barnes sealed the result for the home side.