Debutants Stephanie Kyriacou and Sarah Kemp have delivered clutch shots under immense pressure to help secure Australia’s spot in the semi-finals of the International Crown in San Francisco.

On the back of their upset 2-0 win over Korea on day one at TPC Harding Park, Kyriacou, Kemp, Minjee Lee and Hannah Green accrued 1.5 further points in Round 2 to ensure they will contest the semi-finals on Sunday.

They will go head-to-head with fellow undefeated Pool B team Thailand in the final round robin match on Saturday, safe in the knowledge that are through to the championship finale regardless of that result.

Facing off against a Japan team that lost both matches in Round 1, there was little separating either pairings all day.

Lee and Kyriacou were one down through nine holes against Nasa Hataoka and Ayaka Furue before Lee swung the match in Australia’s favour with back-to-back birdies at 10 and 11.

Japan won both the 12th and 14th holes to go 1 up once again before Kyriacou came to the fore.

The 22-year-old levelled the match with a birdie on 15, earned a vital half with a 15-foot birdie putt on 16 and then stuck her tee shot at the long par-3 17th to just a couple of feet to put the Australian team 1 up with one to play.

“Steph just stiffed it and it was like a foot,” said Lee, who also made birdie on 17. “Then I hit my second shot really comfortably.

“I didn't hit the ball as good today. Steph probably made a few more birdies and kind of got us over the line. Great partner.”

Kyriacou and Lee both birdied 18 to round out a 2 up win as the match behind also went down to the final hole.

A birdie from Green on two gave the Aussies an early advantage against major champions Hinako Shibuno and Yuka Saso but they never advanced to more than one hole ahead.

Saso’s birdie on 12 and Shibuno’s on 14 gave Team Japan a 1 up lead but the Aussies levelled the ledger again with a birdie on the par-5 16th.

The par-3 17th was halved in pars and then Kemp stepped up to hole her birdie putt from six feet on 18 to halve the hole and halve the match, thus securing Australia's spot in the semi-finals.

“It’s that type of hole that a birdie is going to half and an eagle is probably going to win the hole,” said Kemp.

“We were trying to make three, but we knew we were probably going to make four, and it wasn't going to hurt us too bad.

“Greeny is right, we played well, we hit it good, we just didn't hole as many putts as yesterday.

“We probably could have let it slip a few more, but we really hung in there, and to get this half point is huge.”

With Thailand winning both of their matches again Japan and Korea were eliminated from Pool B with one round still to play.

Sweden are the only undefeated team in Pool A to ensure they advance to the semi-finals, China needing to win both of their matches against England and have the US team lose both matches to Sweden to force a playoff for the second spot.