July 20, 2023: Mary Fowler of Australia shoots at goal while Louise Quinn of Republic of Ireland attend to block during the FIFA Women's World Cup Australia & New Zealand 2023 Group B match between Australia and Ireland at Stadium Australia in Sydney, Australia.Getty Images

Ireland's desperate efforts for a late equalizer came agonizingly short in their first-ever game at the FIFA Women's World Cup in Sydney, Australia today, July 20.

Playing in a packed Stadium Australia in Sydney, Ireland set up to frustrate their heavily-fancied opponents in the first half, playing with five at the back and restricting Australia to just one shot on target - a long-range effort from Katrina Gorry that was easily saved by Courtney Brosnan. 

The sides went in level at the break after a hugely physical first half, with plenty of crunching tackles from both sides. 

Manager Vera Pauw would have looked for much of the same in the second half, but Marissa Shevo's needless shove on Hayley Raso gave Australian a golden chance to take the lead from the penalty spot five minutes after the half-time break. 

Australia's Steph Catley made no mistake, sending Brosnan the wrong way with a brilliant strike to the top corner. 

Ireland responded well after conceding the opener and gradually came out of their defensive shell as they attempted to snatch a deserved equalizer. 

The introduction of 18-year-old Abbie Larkin gave Ireland added impetus in attack during the closing stages as Ireland began to put the co-hosts under significant pressure. 

A golden opportunity fell to Heather Payne with ten minutes remaining, but her contact was poor and the ball drifted harmlessly wide of the target. 

With time running out, Ireland continued to press, with Megan Connolly's free-kick deflecting agonizingly over the crossbar as the game entered injury time. 

There was still time for two gilt-edged opportunities as a visibly nervous Australia clung on. 

First, Larkin squared to Katie McCabe following an Irish breakaway, but the Irish captain saw her close-range effort saved from Mackenzie Arnold. 

Ireland recycled possession and came even closer to a last-gasp equalizer when Louise Quinn headed narrowly wide in the final minute. 

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Speaking after the game, McCabe said there were "lots of positives" to take from Ireland's performance. 

"The second half shows a better account of ourselves and we'll look to bring those positives into the game against Canada," McCabe told RTE's Tony O'Donoghue. 

The Girls in Green now travel to Perth to take on Canada in their next group game on Wednesday, July 26.