South Korean Ina Yoon seized a two-stroke lead at Hazeltine National Golf Club after firing a nine-under 63. This score equals the lowest round in the history of the Women's PGA Championship. Yoon birdied five of her final six holes to secure the top spot, marking a massive start for the 23-year-old seeking her first LPGA Tour win.

Australian Karis Davidson follows closely in second place with a career-best 65. While Yoon dominated the leaderboard, world number one Nelly Korda shot a 70 to sit at two under. Korda struggled at the lakeside 16th hole, where a poor swing led to a penalty stroke and a double-bogey that hampered her opening round.

Korda is chasing a historic feat, as only Inbee Park and Babe Zaharias have won the first three majors in one calendar year. Meanwhile, English players Charley Hull and Lottie Woad struggled, sitting 10 and nine shots back. Jeeno Thitikul remains in the mix with a 69, continuing her trend of strong major starts.

This opening round established a high bar for the field on a course that demands both muscle and accuracy. Yoon's performance ranks as the fourth-best first-round score in any major since 1980. The leaderboard now features five Americans in the top eight as the tournament moves into the second round.