Filipina-Japanese teenager Yuka Saso shot a 64 to take a two shot lead at -16 over Lydia Ko after the second round of the LPGA Lotte Championship in Hawaii on Thursday. The 19-year-old Saso, who is playing in Kapolei on a sponsor's invite, carded nine birdies to overtake clubhouse leader Ko after the former world-number-one finished her round with a 63.