Doha, Dec 4 (IANS): Lionel Messi said Argentina had taken "one more step" toward their goal of World Cup glory by overcoming Australia in a dramatic round of 16 clash here on Saturday.

Messi sent Argentina on course for victory with a first-half strike, and Julian Alvarez doubled the lead before Craig Goodwin's shot deflected in off Enzo Fernandez, ensuring a dramatic conclusion at Ahmad bin Ali stadium, Xinhua news agency reported.

Messi's goal, which came in his 1000th game for club and country, marked the first time he has scored in a World Cup knockout match.

"One more target has been reached. We are one step closer to our objective," Messi told a news conference.

"It was a tough game, we knew it was going to be like that. We didn't have much time to rest and we were worried about that. We knew it was going to be a tough game. They are physically very strong. We were able to get the advantage and then it got complicated. We suffered a bit at the end but it's the World Cup. All games are difficult."

Messi paid tribute to the tens of thousands of Argentine fans at the stadium, many of whom sang and chanted throughout the 90 minutes. Argentina's players made a point of applauding them on the pitch after the final whistle.

"It was beautiful to be with them," the 35-year-old forward said. "I think all of Argentina would like to be here, but obviously that can't happen.

"We are always thrilled to play in front of these fans and it's great to have their support every match, to feel their joy and passion.