STANFORD, Calif. -- Three players broke par on Friday to lift Stanford into first place after two rounds of the NCAA Regional Championships at cool and rainy Stanford Golf Course.

Junior Casey Danielson shot a 3-under 68 while senior Mariah Stackhouse and sophomore Shannon Aubert posted 70s to lead the defending national champion Cardinal to a four-player score of 4-under 280. It was the lowest total so far in the 54-hole regional and left No. 12 Stanford at 1-over 569, two strokes ahead of No. 2 USC (571). The Trojans shot 284 on Friday.

Eighteen teams and six individuals are competing. The final round will be played Saturday, with the top six teams and three individuals not members of the low six schools advancing to the NCAA Championships, May 20-25 at Eugene Country Club in Eugene, Oregon.

Six teams will start the last round within five strokes of sixth-place North Carolina at 23-over 591.

Stackhouse made two birdies and only one bogey in the difficult conditions, playing the back nine in 1-under, and is tied for first at 3-under 139 with Alana Uriell of Arkansas, who fired a tournament-best 67. The latter made six birdies, including all four par-3s.

The steady Danielson recorded four birdies and toured the front nine in 2-under 33 and is tied for third at 2-under 140. She made eight pars and a birdie on the back nine.

Aubert played the last 14 holes in 3-under and fired a 2-under 34 on the back nine. She is tied for eighth at 1-over 143.

Senior Lauren Kim collected four birdies and is tied for 30th at 6-over 148, while freshman Sierra Kersten (75) is tied for 44th at 8-over 150.