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2023 San Diego Open
2023 San Diego Open
Date	11–16 September
Edition	37th (2nd as WTA 500 event)
Category	WTA 500
Draw	28S / 16D
Prize money	$780,637
Surface	Hard
Location	San Diego, United States
Venue	Barnes Tennis Center
Champions
Singles
	Barbora Krejčíková
Doubles
	Barbora Krejčíková / Kateřina Siniaková

The 2023 San Diego Open (also known as the Cymbiotika San Diego Open presented by ResMed for sponsorship reasons) was a women's tennis tournament played on outdoor hard courts. It was the 2nd edition of the women's event, which is a WTA 500 event on the 2023 WTA Tour. It was held at the Barnes Tennis Center in San Diego, United States, from 11 to 16 September 2023.^[1]^[2] The men's event was discontinued this year following the return of the ATP Tour to China.

Champions

Singles

Barbora Krejčíková def. Sofia Kenin 6–4, 2–6, 6–4

Doubles

Barbora Krejčíková / Kateřina Siniaková def. Danielle Collins / CoCo Vandeweghe 6–1, 6–4

Singles main-draw entrants

Seeds

Country	Player	Rank¹	Seed
TUN	Ons Jabeur	5	1
FRA	Caroline Garcia	7	2
GRE	Maria Sakkari	8	3
CZE	Barbora Krejčíková	12	4
SUI	Belinda Bencic	13	5
	Veronika Kudermetova	16	6
BRA	Beatriz Haddad Maia	19	7
	Ekaterina Alexandrova	20	8

¹ Rankings are as of 28 August 2023.^[3]

Other entrants

The following players received wildcards into the main draw:

The following players received entry from the qualifying draw:

Withdrawals

Victoria Azarenka → replaced by Alycia Parks
Coco Gauff → replaced by Sloane Stephens
Madison Keys → replaced by Danielle Collins
Donna Vekić → replaced by Jasmine Paolini

Doubles main-draw entrants

Seeds

Country	Player	Country	Player	Rank¹	Seed
CZE	Barbora Krejčíková	CZE	Kateřina Siniaková	3	1
JPN	Shuko Aoyama	CHN	Yang Zhaoxuan	34	2
TPE	Chan Hao-ching	MEX	Giuliana Olmos	39	3
UKR	Lyudmyla Kichenok	LAT	Jeļena Ostapenko	50	4