South Korea's Mirim Lee carded a six-under 66 to secure a one-shot lead ahead of the final round of the Kia Classic.
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Morgan Pressel's course record 64 was enough to lift her into a tie for the lead at the halfway stage of the LPGA Kia Classic in California.
Mirim Lee struck a blemish-free opening round 65 to lead the Kia Classic, with world No 1 Lydia Ko two strokes back.