"I feel great but I'm so tired," the 19-year-old said. "It was such a long day and I had a headache, so I just tried to concentrate on every shot."

"I have to play my own game and not think too much," she said. "I have a four-shot lead so there's a lot of room to play good."

" You always want to shoot under par," said [Alena Sharp]. "I'm out of contention to win now, but I still feel I can shoot in the 60s out here and that would be a great way to finish -- to get back into red numbers."