Hockeyroos too good for hosts Argentina

Georgina Morgan's last-second goal has clinched Australia's women's hockey team an upset 2-1 win over hosts Argentina at the World League finals.

With scores locked up in their pool match in Rosario, the Hockeyroos earned a penalty corner with one second on the clock.

Morgan, who scored Australia's only goal in their 1-0 tournament-opening victory over China on Saturday (Sunday AEDT), converted the chance with a drag flick.

Jodie Kenny only equalised for Australia with seven minutes remaining after Delfina Merinos had put Argentina in front early in the first half.

"It's a wonderful feeling," Kenny said.

"They really stuck it to us and we had to fight right to the end and to score after the hooter, I couldn't be happy."

The Hockeyroos move to the top of pool B and face Great Britain on Tuesday (Wednesday 4.15am AEDT) in their last preliminary match before the quarter-finals start on Friday (Saturday AEDT).