Haythorne is the second player to sign for the Waves and she will be a freshman in the fall.
The women's golf team will try to finish in the top six at the regional, which will be held May 7-9.
Pepperdine has won 17 of the 19 WCC championships ever contested.
The standout high school senior will join the Waves in 2015-16.
Alina Ching and Marissa Chow both tied for fourth place at the Stanford Intercollegiate.
Photos by Jeff Golden, Kyle Terada/WCC and Roger Horne from the Waves' WCC title at Saticoy Country Club.
Jeff Golden's photos of the Waves' first round at Palos Verdes Golf Club on 2/8/2015.
Jeff Golden's photos of the 2014 Bruin Wave Invitational, at which Pepperdine finished second.
Jeff Golden photos from the first round of the Northrop Grumman Regional Challenge.
Photos of the Waves by Paul Levy, taken at the Vanderbilt Legends Club in Franklin, Tenn., from May 22-25.
Recognized by her peers as one of the top collegiate women's golf coaches in the country, Laurie Gibbs is in her 22nd season as head coach of the Pepperdine women's golf team in 2014-15.
During her tenure, Gibbs has taken a program that started out with limited resources and funding and turned it into one of national prominence. Through her tireless work ethic and diligent recruiting, Gibbs has Pepperdine contending for a national championship on a yearly basis.
The last 16 seasons have established Pepperdine as one of the nation's top golf programs. The Waves have appeared in the NCAA Championships 11 times, with eight top-10 finishes and four top-five showings, including a program-best second-place result in 2003. Her players have earned All-American honors 26 times.
Gibbs has led Pepperdine to West Coast Conference championships in 16 of the last 17 years, including a current streak of 13 titles that began in 2002. Over the course of her career, the Waves have won 47 team tournament titles and have had 45 individual medalist honors.
Gibbs was selected the 2004-05 National Coach of the Year by Golfweek, was tabbed the West Region Coach of the Year on two occasions (1999 and 2003) and has been honored 11 times as the WCC's Coach of the Year (1998, `99, `00, `02, `03, `05, `06, '07, '08, '10 and `12).
She has also been honored twice as Pepperdine's Coach of the Year (1998-99 and 2002-03).
In addition to securing the use of four quality facilities for practice purposes, Gibbs has helped improve the on-campus practice facilities at Pepperdine and has stepped up the Waves' recruiting efforts. In 2007, the program fundraising efforts during Gibbs' tenure went over $1 million.
After serving on the NCAA Regional Advisory Committee, Gibbs was selected to serve a four-year term (2003-07) as one of three coaches on the Division I NCAA Women's Golf Committee. She also served on the USGA/NCAA Intercollegiate Committee.
Pepperdine's 2013 and 2014 seasons both ended just a few strokes short of qualifying for the NCAA Championships, but Grace Na earned All-American first team honors from both Golfweek and the WGCA in both years. She became the second four-time All-American in Pepperdine history, and the second two-time All-American first teamer.
Pepperdine turned in another excellent season in 2012, finishing in 21st place at the NCAA Championships after a third-place result at the NCAA West Regional. Pepperdine's final NGCA/Golf World ranking was #19. Na was an All-American for the second time.
The 2011 squad finished with national rankings of #17 in the NGCA/Golf World poll and #20 in the Golfweek/Sagarin index, and had both Na and Danielle Kang and earn All-American honors.
Pepperdine tied for 14th at the 2010 NCAA Championships. The Waves won three tournaments over the course of the season, and Kang and Lisa McCloskey were All-Americans. Pepperdine ranked ninth in the final Golfweek/Sagarin index.
After a one-year absence, Gibbs returned Pepperdine to the NCAA Championships in 2009 with a lineup that featured three freshmen. Thanks to a late rally at the NCAA West Regional that saw Pepperdine claim the eighth and final qualifying spot, the Waves went on to a ninth-place result at the NCAA Championships. Pepperdine won three tournaments during the season, including an NCAA-record-setting performance at the Las Vegas Collegiate Showdown, where the Waves shot a 41-under 823. McCloskey earned All-American honorable mention notice.
Pepperdine, under Gibbs' leadership, was a national contender again in 2007 and finished seventh at the NCAA Championships in Daytona Beach, Fla. All-Americans Eileen Vargas and Misun Cho posted top 30 finishes to lead the Waves. The Waves ended up ranked #5 by both Golfstat and Golfweek/Sagarin.
The Waves earned a third-place showing at the 2006 NCAA Championships at the Scarlet Golf Course in Columbus, Ohio, and Vargas and Carolina Llano were named All-Americans. The Waves finished #5 nationally in Golfstat's final rankings and were #7 by Golfweek/Sagarin.
Pepperdine was again in the running for a national championship in 2005 as the Waves traveled to Sunriver, Ore. Pepperdine led the NCAAs after two rounds before finishing in fourth place, nine shots behind Duke. Llano and Vargas each earned All-American accolades as Pepperdine concluded the season #4 in both the Golfstat and Golfweek/Sagarin final national rankings.
Gibbs' efforts nearly paid off with a national title in 2003 as she guided the Waves to their most successful season in school history. Pepperdine claimed a program-record five straight tournament titles at one point and finished second at the NCAA Championships in West Lafayette, Ind. The Waves finished second in the final Golfstat and Golfweek/Sagarin rankings, and also achieved a program first that season as they gained a #1 national ranking during the spring in both rankings.
Pepperdine was led by three-time All-American Katherine Hull in 2002-03. She enjoyed a remarkable senior campaign, culminating with her being named the NCAA Division I Player of the Year by the National Golf Coaches Association. Hull won individual medalist honors four times during the season. Other honors Hull received that year included the WCC's co-Female Scholar-Athlete of the Year and the Dinah Shore Award, sponsored by the Ladies Professional Golf Association Foundation. Hull earned her third All-American honor, while Lindsey Wright made it for the fourth time.
Pepperdine captured four team titles in 2001-02, including the WCC Championships and a share of the NCAA West Regional Championships. That squad tied for ninth place at the NCAA Championships in Auburn, Wash. Hull and Wright were tabbed first and second team All-Americans, respectively.
Pepperdine continued its streak of NCAA Championships appearances in 2001 with a 14th-place finish at Howey-in-the-Hills, Fla. Hull and Wright were both All-American second teamers.
The 2000 season was highlighted by three team tournament titles, four individual tournament victories and an eighth-place finish at the NCAA Championships in Sunriver, Ore. Tamie Durdin and Wright each captured individual medalist honors twice and became the first All-Americans in the program's history. The Waves registered 11 top 10 finishes in 12 events.
Pepperdine made its first-ever team appearance at the NCAA Championships in 1999 and posted a solid fifth-place showing in Tulsa, Okla. The Waves finished the 1999 season ranked #7 in the final MasterCard rankings. The Waves captured four tournament titles and finished no worse than sixth place in any of their 12 events.
The 1997-98 season proved to be a breakthrough year for Gibbs and the Pepperdine program as the Waves captured their first-ever WCC title. Pepperdine competed in 10 tournaments during and registered eight top 10 finishes. Jenny Glasgow became the second player in Pepperdine history to advance to the NCAA Regionals where she tied for 19th place.
During the 1994-95 season, Gibbs' second as head coach, she watched Candida Kim represent the Waves at the NCAA West Regional Championships -- a first-time accomplishment for the program.
Prior to being hired as the head women's golf coach at Pepperdine, Gibbs was a PGA teaching professional at the nearby Wilshire Country Club in Los Angeles and competed on the Women's Western Professional Golf Tour. In addition to playing and teaching, Gibbs authored and marketed ProTips, a quick reference guide for golfers.
Gibbs attended and played collegiate golf at Long Beach State on an athletic scholarship and graduated from Santa Monica College.
Gibbs and her husband, Chris, have a daughter, Catherine, and a son, Christopher, and reside in nearby Calabasas.