2017 U.S. Women’s Amateur: Sophia Schubert wins at San Diego C.C.

Sophia Schubert won the 2017 U.S. Women’s Amateur at San Diego C.C. in Chula Vista, California, beating Albane Valenzuela 6 & 5 in the final.

Updated October 23, 2026

Walk this draw in the U.S. Women’s Amateur room.

Edition: 117th
Dates: August 7, 2017 to August 13, 2017
Course: San Diego C.C., Chula Vista, California
Format: stroke-play qualifying + match play
Champion: Sophia Schubert · age 21 · United States
Champion's title: 1st U.S. Women’s Amateur
Runner-up: Albane Valenzuela · age 19
Final: 6 & 5
Losing semifinalists: Lilia Kha-Tu Vu and Chia Yen Wu
Stroke-play medalist: Shannon Aubert (135)
Defending champion: Seong Eun-jeong · did not play
Entries: 1,327
What winning earned: U.S. Women's Open 2018 | Evian Championship 2017 (likely invitation) | ANA Inspiration 2018 (likely invitation) | Ricoh Women's British Open 2018 (likely invitation)

What happened at the 2017 U.S. Women’s Amateur

Sophia Schubert never trailed in the final, leading 4 up at lunch and beating Albane Valenzuela 6 and 5.

Chia Yen Wu beat Lauren Stephenson in 30 holes in the quarterfinals, the longest 18-hole match in championship history.

Final, Albane Valenzuela v. Sophia Schubert. Sophia Schubert never trailed in the final, leading 4 up at lunch and beating Albane Valenzuela 6 and 5.

Quarterfinal, Chia Yen Wu v. Lauren Stephenson. Chia Yen Wu, 13, beat Lauren Stephenson in 30 holes, the longest 18-hole match in championship history.

The draw

Every match is recorded through the round of 64.

The final, 2017 U.S. Women’s Amateur

Winner		Beaten	Result
Sophia Schubert	def.	Albane Valenzuela	6 & 5

Semifinals, 2017 U.S. Women’s Amateur

Winner		Beaten	Result
Albane Valenzuela	def.	Lilia Kha-Tu Vu	3 & 2
Sophia Schubert	def.	Chia Yen Wu	2 up

Quarterfinals, 2017 U.S. Women’s Amateur

Winner		Beaten	Result
Lilia Kha-Tu Vu	def.	Lucy Li	4 & 3
Albane Valenzuela	def.	Robynn Ree	4 & 3
Chia Yen Wu	def.	Lauren Stephenson	won on 30th hole
Sophia Schubert	def.	Isabella Fierro	3 & 1

Round of 16, 2017 U.S. Women’s Amateur

Winner		Beaten	Result
Lucy Li	def.	Shannon Aubert	1 up
Lilia Kha-Tu Vu	def.	Sarah Rhee	6 & 5
Albane Valenzuela	def.	Stephanie Lau	4 & 3
Robynn Ree	def.	Karen Miyamoto	1 up
Chia Yen Wu	def.	Kristen Gillman	3 & 1
Lauren Stephenson	def.	Gigi Stoll	5 & 4
Isabella Fierro	def.	Haley Moore	6 & 4
Sophia Schubert	def.	Zoe Campos	7 & 6

Round of 32, 2017 U.S. Women’s Amateur

Winner		Beaten	Result
Shannon Aubert	def.	Agathe Laisne	2 & 1
Lucy Li	def.	Bethany Wu	6 & 5
Lilia Kha-Tu Vu	def.	Sarah Burnham	1 up
Sarah Rhee	def.	Ana Ruiz	2 & 1
Stephanie Lau	def.	Brooke Seay	2 & 1
Albane Valenzuela	def.	Cheyenne Knight	1 up
Robynn Ree	def.	Tze Han Lin	9 & 8
Karen Miyamoto	def.	Virginia Elena Carta	2 & 1
Chia Yen Wu	def.	Jiyoon Jang	won on 19th hole
Kristen Gillman	def.	Brigitte Dunne	5 & 4
Gigi Stoll	def.	Elizabeth Bose	2 up
Lauren Stephenson	def.	Jaravee Boonchant	4 & 3
Haley Moore	def.	Janet Mao	3 & 2
Isabella Fierro	def.	Yuka Saso	1 up
Zoe Campos	def.	Rinko Mitsunaga	2 & 1
Sophia Schubert	def.	Krystal Quihuis	3 & 2

Round of 64, 2017 U.S. Women’s Amateur

Winner		Beaten	Result
Shannon Aubert	def.	Samantha Hutchison	6 & 4
Agathe Laisne	def.	Erica Shepherd	2 & 1
Bethany Wu	def.	Kaylee Benton	3 & 2
Lucy Li	def.	Mariel Galdiano	4 & 3
Sarah Burnham	def.	Tatiana Wijaya	1 up
Lilia Kha-Tu Vu	def.	Brenna Lervick	4 & 3
Sarah Rhee	def.	Andrea Lee	1 up
Ana Ruiz	def.	Yujeong Son	1 up
Stephanie Lau	def.	Anne Taylor Hough	3 & 2
Brooke Seay	def.	Rachel Heck	won on 20th hole
Albane Valenzuela	def.	Wad Phaewchimplee	1 up
Cheyenne Knight	def.	Gurleen Kaur	3 & 2
Tze Han Lin	def.	Bailey Tardy	3 & 2
Robynn Ree	def.	Sabrina Iqbal	5 & 4
Karen Miyamoto	def.	Julie Houston	4 & 3
Virginia Elena Carta	def.	Pauline Roussin-Bouchard	4 & 3
Chia Yen Wu	def.	Julianne Alvarez	5 & 4
Jiyoon Jang	def.	Hailey Jones	2 & 1
Kristen Gillman	def.	Hailee Cooper	3 & 2
Brigitte Dunne	def.	Youngin Chun	won on 20th hole
Elizabeth Bose	def.	Lindsey McCurdy	2 & 1
Gigi Stoll	def.	Michaela Morard	won on 20th hole
Lauren Stephenson	def.	Erin Fahey	3 & 2
Jaravee Boonchant	def.	Maria Torres	5 & 4
Haley Moore	def.	Latanna Stone	1 up
Janet Mao	def.	Madison Caldwell	5 & 3
Isabella Fierro	def.	Alexa Pano	4 & 3
Yuka Saso	def.	Conner Beth Ball	3 & 2
Rinko Mitsunaga	def.	Alice Hewson	won on 20th hole
Zoe Campos	def.	Lauren Hartlage	4 & 3
Krystal Quihuis	def.	Jennifer Kupcho	2 & 1
Sophia Schubert	def.	Naomi (Eun Young) Ko	4 & 3

How this was built

Every value is shown as recorded in GNN's U.S. Women’s Amateur data set (research collected through October 20, 2026). "unknown" means no source confirmed it; nothing is estimated. Where sources disagree, the USGA's own record is used.

Data: us-womens-amateur.json.