South Korea's Ryu So-Yeon had seven birdies and no bogeys in a seven-under 65 on Friday to seize a two-shot lead in the LPGA Classic at Prattville, Alabama. At nine-under par 135, Ryu led Australian Minjee Lee and Americans Ryann O'Toole and Morgan Pressel. Lee had three birdies and a bogey in her two-under 70, while O'Toole carded a 67 and Pressel signed for a 68. Ryu said putting made the difference in her round, which was five strokes better than her opening 70. "Actually, even yesterday my shots were really great, but I couldn't make a lot of putts, but today I pretty much made everything," said the South Korean, who needed just 27 putts.