Australian Masters: Justin Rose admitted he had to ride "a rollercoaster" to secure his first European Tour victory in four years at the Australian Masters at Huntingdale.

Rose carded a final round one-over 73 to be 12-under-par overall but he had to hold off a challenge from a throng of Australians, including amateur Aaron Pike.

The Englishman also made a disastrous triple-bogey at the par-five seventh which threatened to derail his hopes, but the world number 69 showed true grit to bounce back and don the gold jacket the winner of the event receives.

"It was a rollercoaster. I was really pleased though that my emotions didn't rollercoaster," said Rose, who now jumps to fifth on the European Tour order of merit.

"I stayed very calm, even when I made triple on the seventh I said 'well you are tied for the lead, game on' and it was awesome to bounce back with a birdie on the eighth. It was a really tough golf course today."

Pike provided the day's highlight by holing a bunker shot for eagle on the 14th.

But Rose, playing in the final group and following Pike, responded with a birdie at the 555-metre hole, and after giving a shot back at the 15th, another birdie at 16 set up the win.

Richard Green, the 2004 champion, carded a final-round 69 to finish at 10-under, equal second with Greg Chalmers who sunk a long birdie putt on the last for a round of 73.

Chalmers had earlier shared the lead when he was 11-under after eight holes, but a shocking five putt on the ninth ended his winning hopes.

Green was hopeful he could win the tournament when he posted an early leading score in the clubhouse on day where the course - which had been dominated for most of the week - bit back.

"The course played very difficult," Green said. "The pin placements were very tough and the firmness of the greens was very difficult as well.

"(When I was waiting in the clubhouse) I knew that 16 was playing very difficult and 17 and 18 anything can happen. All credit to Justin for hanging on."

Rose agreed with Green's sentiments regarding the closing holes, and was thrilled to have finished so strongly.

"When Richard Green had posted 10-under, the last three holes had been bad to me all week," Rose said.

"I bogeyed all three of them on Thursday, one of them on Friday, one on Saturday and I felt like I wanted a lead coming into those holes, so to play the last three in one-under was the reason I won the tournament."

Damien McGrane shot a final round of 75 for a 287 total while Gary Murphy fired a 78 to finish on 293.