Maybe Yoon Kyung was worried that the high rough would be too hard on her knee. That and the soft fairways and long holes will force her to hit too many rescue clubs. If so long term that may be a good decision.
I'll try to post a full round report tomorrow, but I may not be able to (busy day!)
As of now, with several hours of golf left to play, Jin Young Ko, #3 on this year's money list, is taking advantage of the absence of #1 and #2 by shooting a 67 to move to 10 under and a one shot lead. She leads Yoon Ji Cho, who is also finished. Hye Youn Kim shot a 72 and is now four back.