Epps handed a morning defeat of 2-and-1 to Candy Hannemann at the No. 2 course at Pinehurst, and then disposed of Aree Wongluekiet 4-and-3 in the afternoon semifinals.
Duncan, a 21-year-old in search of her second consecutive national amateur crown, beat Elizabeth Burden 2-and-1 and then Naree Wongluekiet 1-up to advance into Friday.
I always put pressure on myself, claimed Duncan, who is fresh off a victory at the Womens Western Amateur, but these last three weeks I have only had those two key thoughts.
Those thoughts ' swing smooth and stay relaxed.
They helped her to victory two weeks ago in Chicago, and now Duncan is hoping they will guide her to another win in North Carolina.
Im just playing relaxed, she said.
Results from the 99th Womens North and South Amateur Championship played at the Pinehurst No. 2 course in Pinehurst, N.C.:
Mimi Epps def. Aree Wongluekiet 4-and-3
Merideth Duncan def. Naree Wongluekiet 1-up
Quarterfinals Upper Half:
Mimi Epps def. Candy Hannemann 2-and-1
Aree Wongluekiet def. Laura Myerscough 6-and-5
Quarterfinals Lower Half:
Naree Wongluekiet def. Carol Semple Thompson 5-and-4
Meredith Duncan def. Elizabeth Burden 2-and-1
Click here to see results from Wednesday's play
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