In the rankings released April 28 (Korea time), Yoon moved up 14 spots from No. 53 last week.
Yoon tied for fourth at the Chevron Championship, which ended April 27, finishing at 12-under 276.
Yoon, who debuted on the LPGA Tour last year, has built momentum this season. She tied for sixth at last month’s Ford Championship, then set a personal best with a solo fourth at the JM Eagle LA Championship, which ended April 20. She followed with another tie for fourth at the Chevron to record top-five finishes in consecutive weeks.
The result also marked Yoon’s best showing in a major. Her previous best was a tie for 14th at last year’s U.S. Women’s Open.
Nelly Korda of the United States, who won the season’s first major title, returned to No. 1 in the world ranking.
Korda had surrendered the top spot to Jeeno Thitikul of Thailand in August last year and regained it after eight months.
Among South Koreans, Kim Hyo-joo held at No. 3. Kim Sei-young slipped to No. 11.
Lee Ye-won, who won the KLPGA Tour’s Duksin EPC Championship, rose 17 places to No. 52.
* This article has been translated by AI.
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