Ryu Hae-ran has grabbed the halfway lead in her quest for a third straight LPGA major crown. Ryu moved into sole possession of the lead at seven-under 135 through 36 holes at the AIG Women's Open at Royal Lytham & St. Annes Golf Club in Lytham St Annes, England, on Friday (local time). The South Korean shot a two-under 69 with five birdies, a bogey and a double bogey in the second round, and she leads Shiho Kuwaki of Japan by two shots. Ryu dropped three shots through her first five holes, with a bogey at the par-4 third and a double bogey at the par-3 fifth. But then she collected five birdies the rest of the way, including one at the difficult par-4 15th. Ryu was one of just four players to make birdie on that hole in the second round. Ryu, world No. 3, is trying to become just the fifth LPGA player to win three majors in one season. She previously won the KPMG Women's PGA Championship in June and the Amundi Evian Championship earlier this month. The last player to win three LPGA majors in a row is South Korean legend Park In-bee, who pulled off the feat in 2013. "Since I had an afterno