In summary

  • Miyu Yamashita won by nine strokes with a 23-under 257 total, matching Sei Young Kim's 2018 tournament-record score.
  • Yamashita broke the tournament record of 262 after also setting 36- and 54-hole marks during the week.
  • Three US Solheim Cup spots were decided, with captain Angela Stanford set to announce her three picks on Monday.

The 150cm (4-foot-11) Yamashita made a birdie putt on the 18th for a four-under 66 and 23-under 257 total. Sei Young Kim also shot 257 in the 2018 Thornberry Creek LPGA Classic in Wisconsin, finishing at 31-under.

Six strokes ahead entering Sunday's final round, Yamashita pushed the margin to nine on the tree-lined Royal Mayfair layout, breaking the tournament record of 262 set by Jin Young Ko in 2019 at Magna in Aurora, Ontario, after also setting 36- and 54-hole marks.

"I was nervous; nervous round, so my shot, my game, I trust my swing," Yamashita, 25, ‌said.

Yamashita's four LPGA Tour titles have come in four countries. She won the Meijer LPGA Classic in June in Michigan after taking the Women's Open Championship in Wales and the Maybank Championship in Malaysia last season as the rookie of the year. She has 13 Japan LPGA victories.

A stroke ahead on Thursday after opening with a course-record 62, Yamashita had a 64 on Friday afternoon to open a five-shot lead. She shot 65 on Saturday to push it to six.

Fellow Japanese player Yuri Yoshida finished a distant second at 14-under after a 69. Kim was another shot back after a 67.

Two Canadian teenagers completed mightily impressive performances in their national open.

Seventeen-year-old Anna Huang was the top Canadian, closing with a 65 to tie for fourth at 12-under.

Huang, a native of Vancouver, has been ​a revelation on the Ladies European Tour, where she's won ‌four times since last September, most recently the PIF London Championship earlier this month. 

Aphrodite Deng, the 16-year-old amateur who won the 2025 US Girls' Junior, tied for seventh at 11-under after a 67.

Robyn Choi led the Australian contingent after surging with a 67 to tie for 17th at six-under, one shot ahead of Grace Kim (68), while Karis Davidson (71, three-under) tied 37th and Cassie Porter (72, two-under), tied 44th.

World No. Nelly Korda had a 69 to get to five-under.

Three spots on the US Solheim Cup were decided during the week, with captain Angela Stanford set to announce her three picks Monday for the September 11-13 matches in the Netherlands. 

Allisen Corpuz wrapped up the last automatic place Friday, and Andrea Lee and Alison Lee took spots off the working ranking Sunday.