Japan's Mika Miyazato shoot a 4-under 68 on Saturday to take a two-stroke lead after the second round of the LPGA Tour's Safeway Classic.
Miyazato, tied for the first-round lead with Sydnee Michaels after a 65, had an 11-under 133 total on Pumpkin Ridge's Ghost Creek Course.
South Korea's So Yeon Ryu, the Toledo Classic winner last week, was second after a 68. Ryu and Miyazato, winless in her four seasons on the LPGA Tour, will be paired together again Sunday after playing in the same group the first two days.
Cristie Kerr and Inbee Park shot 70 to reach 8 under, and Michaels had a 72 to join top-ranked Yani Tseng and Paula Creamer at 7 under. Tseng had a 67, and Creamer shot a 69.
Miyazato is enjoying the best stretch of play on the LPGA Tour of late, with second-place ties this summer at the NW Arkansas Championship and LPGA Championship.
''I have so much good experience the last four or five events,'' Miyazato said. ''But I don't know how much closer to win the tournament. I try to focus on my golf game, one shot at a time.''
She was asked if she's ready to win.
''I'm always ready,'' she said.
Miyazato must fend off Ryu, who closed with a 9-under 62 last week in Ohio to tie the LPGA record for lowest final-round score for a winning player. Ryu is 29 under in her last six rounds of competition, all six rounds in the 60s.
''(Miyazato) is ready to make a win. The problem with golf is it's quite a mental game. She can win pretty soon, but I want to make another win, too,'' Ryu said.
Tseng leads the tour with three victory, but hasn't won since March and missed the cut in three of her previous four tournaments.
''I'm (four) shots back, so on this course, you can make a lot of birdies here,'' Tseng said. ''I feel I'm getting back. I can get back slowly. I don't have to win this week. I can play well tomorrow and maybe next week I'll win, but you never know.''
Kerr, who won the event in 2008 at Columbia-Edgewater and finished second Pumpkin Ridge in 2010, expects Sunday to be a shootout.