Doubles
2009 Bank of the West Classic
Champions	Serena Williams Venus Williams
Runners-up	Yung-Jan Chan Monica Niculescu
Score	6–4, 6–1
Draw	16
Seeds	4

Cara Black and Liezel Huber were the defending champions, but lost in the quarterfinals to Yung-Jan Chan and Monica Niculescu.

Serena Williams and Venus Williams won in the final, 6–4, 6–1, against Yung-Jan Chan and Monica Niculescu.

Seeds

Draw

Draw

	First round							Quarterfinals							Semifinals							Final
	1	C Black L Huber	6	6
		A Haynes O Savchuk	1	3				1	C Black L Huber	5	3
		Y-j Chan M Niculescu	6	2	[10]				Y-j Chan M Niculescu	7	6
		S Foretz A Spears	4	6	[6]											Y-j Chan M Niculescu	3	6	[10]
	4	S Cîrstea M Kirilenko	5	6	[10]										4	S Cîrstea M Kirilenko	6	3	8
		L Granville C Gullickson	7	3	[5]			4	S Cîrstea M Kirilenko	6	6
		A Keothavong A Morita	6	3	r				J Coin M-È Pelletier	3	3
		J Coin M-È Pelletier	4	5																			Y-j Chan M Niculescu	4	1
		A Kleybanova A Rodionova	6	6																		2	S Williams V Williams	6	6
		J Craybas S-W Hsieh	2	2					A Kleybanova A Rodionova	4	6	[10]
		A Kudryavtseva T Poutchek	6	4	[4]			3	B Mattek-Sands N Petrova	6	4	[12]
	3	B Mattek-Sands N Petrova	4	6	[10]										3	B Mattek-Sands N Petrova	2	2
		L Dekmeijere J Ditty	6	7											2	S Williams V Williams	6	6
	WC	H Barte L Burdette	4	65					L Dekmeijere J Ditty	1	0
	ALT	Y Chen M Washington	4	2				2	S Williams V Williams	6	6
	2	S Williams V Williams	6	6