Sung Hyun Park and Jenny Shin finished the rain-delayed first round of the abbreviated LPGA Texas Classic with a one-stroke lead, but a host of players including Australia's Minji Lee are in contention for victory.
After Thursday's play was cancelled and Friday's began after an eight-hour rain delay, the tournament was reduced from 72 holes to 36.
There will be no cut, but only the top 70 and ties in the 144-woman field will win prize money.
The second round began Saturday afternoon before the first round ended. Park and Shin, who carded rounds of six-under 65, were scheduled to start their final rounds Sunday afternoon.
Lee is at four under midway through her second round, after a 68 in her opening round, which was matched by her countrywoman Su Oh.
Katherine Kirk is at even during her second round while Karrie Webb started with a 71.
Park, last year's US Women's Open champion and the top-ranked player in the field at No.5, had seven birdies and one bogey at the Old American Golf Club
She was six under when play was halted on Friday and parred her remaining four holes on Saturday.
Her fellow South Korean Shin, was four-under through 14 holes on Friday.
On Saturday, she birdied the par-3 seventh and the par-4 ninth.
Denmark's Nicole Broch Larsen and Thailand's Moriya Jutanugarn were among those playing their second rounds Saturday and making a run at the lead.
Jutanugarn, who won at Los Angeles two weeks ago, shot a first-round 66, sandwiching eight birdies between an opening double bogey and a closing bogey.
After heavy rains and gusty wind Thursday and Friday, Saturday featured bright sunshine and high temperatures
This will be the LPGA Tour's first 36-hole event since the Bahamas-LPGA Classic in May 2013, which was cut short because of flooding.