Of the four, Keever has had the most success and was the only amateur to break 70 with her Thursday score of 69.
Here's how the amateurs have faired this year:
Laura Coble made her fifth appearance in a USGA championship, finishing 16-over-par (79-77-156). Coble, age 37, is one of the more seasoned amateurs to play in this year's Open.
Meredith Duncan, a student at Louisiana State University, made her first U.S. Womens Open appearance. At 14-over-par (76-78-154), Duncan did not experience great success in her Open debut.
Dominique Brooks Gagnon of the Dominican Republic shot her way out of the championship with a 36-hole score of 20-over-par (76-84-160). Gagnon is currently a Public Relations and French major at the University of Miami.
Natalie Gulbis, playing in the Open for the first time, shot a respectable two-day score of 4-over-par 144 to become one of the four lucky amateurs to carry on throughout the weekend. Gulbis was named All-American in 1998 and 1999. The 18-year-old is currently a member of the Arizona womens golf team. At the age of 14, Gulbis qualified for the LGPAs Longs Drugs Challenge.
Candy Hannemann missed the cut in her first Open appearance in 1998. A two-day total of 6-over (73-73-146) left the Brazil native and winner of the 2000 North and South Womens Amateur alive for the weekend.
Leigh Anne Hardin, a 19-year-old at Duke University and Medallist (140) at the 2000 U.S. Womens Amateur, completed her first U.S. Womens Open at 15-over-par (78-77-155). She will consequently have the weekend off.
Hilary Homeyer has participated in three Opens (1997, 2000 and 2001). Homeyer, a student at Stanford, missed the cut in 97 and finished 56th in 2000. The Minnesota native completed the first round at 9-over 79 and was a few holes into her second round when she withdrew due to a reoccurring wrist injury.
Angela Jerman completed her first Open at 11-over (77-72 151). Jerman, age 20, is a business major at the University of Georgia and was named first-team All-SEC in 2000. She helped lead her school to the 2001 NCAA Division I Women's National Championship.
Stephanie Keever, a member of the Stanford golf team, shot the lowest two-day score of all the 20 amateurs. This is her third U.S. Womens Open appearance (1996 and 2000) and the second time she has played in the Open at Pine Needles. Keever played in the '96 Open at Pine Needles when she was 17 years old. Keever graduates from Stanford on June 17th and is planning to turn pro the next day.
Christina Kim, a 17-year-old from San Jose, CA., shot 6-over (73-73-146) to stay afloat in her first Open. Kim was MVP of both her high school team in 2000 as well as the National Open High School Championship.
Brenda Corrie Kuehn competed in her ninth Open at eight months pregnant. Her two-day total was 23-over-par (79-84-163). Kuehn, age 36, had missed the cut seven times in the past. Her best finish came in 1998 when she tied for 36th. She was the 2000 runner-up at the North and South Womens Amateur.
Marcela Leon shot 13-over (79-74-153) in her first Open. Leon, a junior at San Jose State University and a member of the schools womens golf team, joined the 15 other amateurs who will be watching the conclusion of this years Open from the sidelines.
Amber Marsh finished her second Open appearance at 22-over-par (82-80-162). She did not make the cut in her only other Open appearance in 1997.
Laura Myerscough just missed the cut after recording a disappointing 7-over-par (76-71-147). This was the 21-year-old Myerscoughs first Open appearance.
Stacy Prammanasudh was the winner of the 2001 Western Athletic Conference Championship, runner-up at the 2001 NCAA Central Regional, winner of the 2000 Stanford Womens Intercollegiate and named Golf World Collegiate Player of the Week (Oct. 27, 2000). She finished at 9-over (71-78-149).
Morgan Pressel, the 13-year-old wunderkind, played her first Open like an old pro. Pressel finished at an impressive 14-over-par (77-77-154) considering her age, and the fact that she did not take up golf until age 8.
Diana Ramage, a member of Auburns womens golf team, completed her first Open at 19-over-par (80-79-159).
Carrie Summerhays missed her second consecutive Open cut. Summerhays finished two rounds at 17-over (79-78-157). Carrie is the daughter of Senior PGA Tour player Bruce Summerhays.
Carol Semple Thompson, age 52, became the oldest women to ever participate in the U.S. Womens Open. Thompson has participated in 30 Womens Opens prior to this year, where she missed the cut for the 21st time with a two-day total of 20-over-par (80-80-160).
Celeste Troche, a sophomore at Auburn, missed the cut after finishing at 16-over-par (80-76 156). Troche was the winner of the ACC/SEC Invitational Shootout.
Full-field scores from the 56th U.S. Women's Open