Junior Casey Danielson produced the shot of the day, recording a hole-in-one at the 161-yard par-3 14th, to lead Stanford in the first round of the NCAA Women's Golf Championships at cloudy Eugene Country Club.
The defending national champions posted a four-player score of 7-over 295 on Friday and are tied for 12th.
All 24 teams play Saturday and Sunday, when the field will be trimmed to 15 for the final round of medal play on Monday. The top eight advance to match play on Tuesday.
"Every day, the goal is to take one out of eight," Walker said. "We're a good enough team that one of these days we could be low scorer."
Oklahoma State is the early pacesetter, combining for a 4-under 284.
Every Stanford player made at least one birdie, but Danielson outdid everybody. She pulled a 5-iron onto the water-guarded green at 14 and the ball trickled into the cup for an eagle, the second ace of her life.
"I was between clubs and into a little breeze," said Danielson. "Usually I would hit a 6-iron, but I just wanted to get it back there and avoid the water."
Danielson turned away and didn't see the ball disappear. But her mother, Liz, screamed, and assistant coach Lauren Dobashi gave Danielson the good news.
Playing partners Julianne Alvarez of Washington and Summer Rocahell of Arkansas helped her celebrate.
"They were pretty excited, which was really fun," Danielson said. "We had a good group."
Her previous hole-in-one came during a practice round for the 2013 U.S. Women's Amateur at The Country Club of Charleston in South Carolina.
"Really cool," said Walker.
After a slow start, Danielson toured the back nine in 3-under 32 and finished with a team-best 1-under 71 and is tied for 19th.
Hayley Moore of Arizona and August Kim of Purdue shot 68 and share the individual lead.
Cardinal senior Lauren Kim and sophomore Shannon Aubert checked in with 74s and are tied for 55th. Freshman Sierra Kersten shot 76 and is tied for 85th, while senior Mariah Stackhouse struggled to a 79 (t-122).
Conditions were cool and cloudy at the start, then turned to a mix of sun and overcast on the back nine
No. 12 Stanford begins second round play on Saturday at 8:30 a.m. PT on the 10th tee. The third round will be contested Sunday, with the top 15 teams advancing to the final round of medal play Monday. Eight schools qualify for match play on Tuesday.
Three solo home runs were nearly enough for Stanford, but No. 17 Washington tied the Pac-12 series opener in the eighth and walked off in the ninth, 4-3, on Friday night at Husky Ballpark.
Freshman starter Tristan Beck ran into some trouble early. A leadoff walk led to a run in the first, and then the Huskies loaded the bases with one out. Beck escaped with a line out and strike out to keep it 1-0.
In the home half of the second, with a runner at third and one out, a pop up on a squeeze bunt resulted in an inning-ending double play. And in the third, with runners at first and second with one out, Beck got a strikeout and then sophomore catcher Bryce Carter picked off the runner at first to get out of another jam.
Meanwhile, Carter hit the go-ahead home run in the top of the third -- a towering solo shot to right for a 2-1 lead. It came just moments after sophomore Mikey Diekroeger had tied the game with a solo home run to right center.
Sophomore Matt Winaker added to the lead in the sixth inning with Stanford's third solo home run of the game. It easily cleared the 365-foot marker in right center for a 3-1 advantage.
Beck settled in and retired eight in a row before a solo home run broke that string and made it 3-2 in the sixth. Two more runners reached and sophomore Colton Hock came on in relief. He stranded both Huskies with a strikeout and ground out.
Washington (30-18, 15-10) tied the game in the eighth. A leadoff walk came around to score on a steal and single. Hock left two runners stranded, but the Huskies ended it one inning later.
In the ninth, a one-out single was followed by a pair of walks to load the bases. Huskies pinch hitter MJ Hubbs hit a deep fly ball to centerfield for the game-winning sacrifice fly.
Quinn Brodey extended his hitting streak to a career-best 12 games -- longest of the season for the Cardinal and longest for a Stanford player since Alex Blandino hit safely in 24 straight in 2014
The Cardinal and Huskies will meet on Saturday at 1 p.m., and on Sunday at noon