Kim won the Thornberry Creek LPGA Classic in Oneida in the US state of Wisconsin on Sunday local time with a final score of 31-under 257.
The 25-year-old carded a seven-under-par 65 in the final round, after Thursday's 63, Friday's 65 and Saturday's 64. Kim's performance included 31 birdies, one eagle and - proving she is human after all - one double bogey on the 17th in the second round. She finished at 31-under, 257 to shatter the 72-hole scoring record, which she previously owned along with Annika Sorenstam, who totaled a 27-under in 2001. "Yeah, I'm very happy that dream came true". Anna Nordqvist, Amy Yang and Emma Talley finished joint third, 11 behind Kim. Hee Young Park won a playoff after she and Angela Stanford each finished at 258 in the Manulife Classic in Canada in 2013 (par 71), while Karen Stupples shot 258 at the Welch's/Fry's Championship in Arizona in 2004 (par 70). The 32 holes under par is another record, breaking the mark of 30 set by Brittany Lincicome, Gerina Pillar and Lexi Thompson at the 2017 Pure Silk-Bahamas LPGA Classic.
Sei Young Kim watched her 12-foot birdie putt break toward the hole and disappear into the cup, putting her in territory no one had ever been on the LPGA Tour. "It's unbelievable the way she (Sei Young) played". She obviously knows how to win. "Then I set my goals, just kept relaxed - except the last three holes I couldn't control the nerves because it was nearly done, but I finished really good". Her second shot put her on the green but her birdie try was never close and she had to make a tough putt coming back to save par.
Including her final round of 63 at this event previous year, Kim has now played her last 72 holes at Thornberry Creek in 33 under par and her 7th LPGA Tour title now appears but a formality. Kim hit 67 out of 72 greens in regulation. Sam Saunders lost out with bogeys on the 16th and 17th holes to miss by one.
Even with an eight shot lead entering the round, Kim never let her foot off the gas pedal.
New Zealand's Ko, who snapped a near two-year title drought with a victory in San Francisco in April, holed out from the 86 yards out in the fairway for an eagle at the par-five 15th on the way to her second straight six-under 66. Brooke Henderson of Smiths Falls, Ont., closed at 14 under.