KANSAS CITY, Mo. — Co-medalist Mari Chun, a 17-year-old from Pearl City, survived two close matches yesterday and advanced to the quarterfinals of the U.S. Women's Amateur Public Links.

Chun, who will enter Stanford this fall, had a five-hole lead over Hannah Jun, a junior at UCLA, after seven holes. Jun stormed back to get within one after 16 holes, but Chun won the third-round match 1-up.

In the morning match, Chun didn't take her first lead over Renee Skidmore of Everett, Wash., until the 17th hole and won 1-up when they both parred No. 18 at Swope Memorial Golf Course.

Jun birdied Nos. 9, 15 and 16 and eagled 12 in pursuit of Chun.

"She was playing some unbelievable golf," Chun said. "When she made an eagle, I made a birdie. It was in a sense we were playing the best golf possible. I was sinking some putts. It pretty much evened out. I knew she was pretty good and could pull it off. She got closer on the back nine.

"It wasn't like winning a hole with a par, but at the end you needed a birdie."

Mariko Shimozaki, of Kihei, Maui, lost to defending champion Ya-Ni Tseng, in the second round, 4 and 3. Shimozaki is a Seabury Hall graduate.

Despite the identical scores yesterday, Chun's victories were a study in contrast.

Chun never led in her match against Skidmore until the par-5 17th, when Skidmore bogeyed and Chun parred.

"I was not putting well but she was," Chun said. "We both didn't give each other breaks. It was more like struggling and trying to hang on."

Chun will meet 14-year-old Jane Rah of Torrance, Calif., in the quarterfinals this morning. The semifinals are this afternoon and the 36-hole final is tomorrow.

Angela Park, the other co-medalist, lost 1-up to Juli Wightman of Brigham Young in her second-round match. Park bogeyed No. 8, which allowed Wightman to take the lead for good. The two matched scores for the next 10 holes, including birdies on 18.

"I hit a 5-iron within a foot on No. 18 and she was inside me," Wightman said. "That's how it was all day. It was neck-and-neck every hole until the last shot."

Wightman will face Ya-Ni Tseng, a 16-year-old from Taiwan who beat Michelle Wie in last year's finals, in the quarterfinals. Tseng defeated Stephanie Ruiz of Edmond, Okla., 2 and 1, in the third round.

The quarterfinalists of the U.S. Amateur Public Links Championships are guaranteed spots in next year's tournament.

Correction: A photo identified as Mari Chun that appeared in yesterday's U.S. Women's Amateur Public Links story was of Leilehua High golfer Britney Choy.