Australia controlled the match from the onset but as they began to tire, Argentina took their opportunity to pounce with the breakthrough coming in the second quarter from captain Delfina Merino.

While the loss saw Argentina leapfrog Australia in the standings with a game in hand, attention turned to the milestone of Lynch. 

The 32-year-old became just the second Australian goalkeeper and the 23 Hockeyroo to reach 200 caps.

"It's not something you think about when you start playing for Australia," Lynch said.

"I'm really proud to be at this point and it's been part of my life for a long time.

"I feel so lucky for the people I've been able to meet, the girls that I've played with and I've just tried to soak it up and enjoy the moment."

Lynch made her debut in the green and gold 13 years ago in a match against England and the Victorian wants to continue going with the Tokyo Olympics in her sights. 

Rachel Imison, who is the only other goalkeeper to reach the milestone, also holds the record for being the most capped keeper with 207 games. 

That's an achievement which Lynch has in the back of her mind. 

“We’re leading into Tokyo and that’s something in my mind,” Lynch told Hockey Australia.

“I’d still love to win a gold medal with this team and that’s something I’m passionate about.

“It’s still a long way off and we’ve got the FIH Pro League which is a really cool opportunity for the Hockeyroos and Hockey in general to promote our sport.

“I’m trying to embrace it and enjoy it but Tokyo is the bigger focus.”

The Hockeyroos will be back at Sydney Olympic Park when they face New Zealand on this afternoon (March 17) at 5pm AEDT.