Jodie Kenny struck twice for Australia as they beat England 2-1 in their Champions Trophy opener in Argentina.
It was cruel on England, who had fought back strongly to equalise through Ellie Watton after losing captain Alex Danson in the first quarter.
Danson collided with Australia's Anna Flanagan and was taken to hospital but later released to rejoin the squad.
Kenny's goals came from penalty corners after five minutes and with five minutes left to play.
Although Australia started strongly, Danny Kerry's side recovered from conceding the early goal and losing Danson - who had walked from the pitch but then needed treatment on the bench - to get back into the game.
They started to look more dangerous and, on 40 minutes, Watton got on to the end of Joie Leigh's pass to score.
Although the St Albans player did not get the cleanest of strikes on the ball, it was enough to beat Australia goalkeeper Ashlee Wells.
But when Australia got another penalty corner late on, Kenny's precise finish secured the win, although coach Kerry was still proud of his side's efforts.
"The team and staff are pleased with the level of performance," he said. "We felt we had the balance of play in the second half but you have to credit Australia for converting their corners. I thought the young players did well and I'm pleased at the progression we've made in the last three months."
England face Germany in their second game on Sunday.