Jutanugarn, who was the LPGA Tour rookie of the year in 2013, has really come of age in 2017 with eight top tens and of she was to go on and win tomorrow then she will have well and truly emerged from the shadow of her brilliant sister.
Playing through rain and hail, Anna Nordqvist defeated Brittany Altomare on the first hole of a playoff to win the Evian Championship in France.
The 2009 LPGA Championship victor, who battled glandular fever (mononucleosis) this summer, outlasted third-year-pro Altomare under borderline-unplayable conditions similar to those on Thursday that forced the LPGA to reduce the tourney to 54 holes.
Moriya went 3 under par on Saturday to improve to 9 under, three strokes clear of first-round leader Park Sung-hyun, one of Saturday's late starters who had completed 11 holes as of 9.30pm Thailand time, and former world No.1 Lydia Ko.
The only sisters to have won on the LPGA Tour are the Swedes Annika and Charlotta Sorenstam.
Last year, Nordqvist lost a playoff for the U.S. Women's Open after a rules violation on the second extra hole - for touching sand with her club in a fairway bunker - was relayed to her on the next hole.
Thought it was Ariya who broke out first with five victories in 2016 including her first major title, this week Moriya chases her first career win she also has a chance to make history.
In this Associated Press photo, Park Sung-hyun of South Korea watches her shot at the third hole during the final round of the Evian Championship on the LPGA Tour in Evian-les-Bains, France, on September 17, 2017.
It was at the par three, 16 where Nordqvist was able to break free of the pack and take the outright lead at 10-under par, but a bogey at the last dropped her back and she was left waiting and watching in the clubhouse to see what the outcome would be. She rolled it in for the win and doubled over with emotion, bent at the waist, her face in her hands.
"I played great today and hopefully I can keep it going", said the 33 year-old.
On that occasion, she slipped back to finish tied 16th.
Kirk's previous best finish in a major championship was in 2010 when she finished runner-up to Yani Tseng at the Women's British Open at Royal Birkdale. "Just trying to give myself a chance for birdie".
"I haven't played much the last couple months, so definitely feel like I need some more tournament play, but obviously excited to put up a good number today", Nordqvist said.
Kirk is in good shape this year.