Doubles
2009 Western & Southern Financial Group Masters
Champions	Daniel Nestor Nenad Zimonjić
Runners-up	Bob Bryan Mike Bryan
Score	3–6, 7–6(7–2), [15–13]

Bob Bryan and Mike Bryan were the defending champions, but lost in the final to Daniel Nestor and Nenad Zimonjić, 3–6, 7–6^(7–2), [15–13].

Seeds

The top four seeds receive a bye into the second round.

Draw

Finals

	Semifinals							Final
	1	Bob Bryan Mike Bryan	0	6	[10]
	8	Łukasz Kubot Oliver Marach	6	4	[4]
								1	Bob Bryan Mike Bryan	6	62	[13]
								2	Daniel Nestor Nenad Zimonjić	3	77	[15]
	4	Mahesh Bhupathi Mark Knowles	4	3
	2	Daniel Nestor Nenad Zimonjić	6	6

Top half

	First round							Second round							Quarterfinals							Semifinals
								1	B Bryan M Bryan	6	6
	WC	J Levine R Ram	2	2					M Mirnyi A Ram	4	2
		M Mirnyi A Ram	6	6											1	B Bryan M Bryan	6	713
		T Berdych P Kohlschreiber	5	77	[10]										7	W Moodie D Norman	4	611
		N Davydenko I Kunitsyn	7	64	[7]				T Berdych P Kohlschreiber
								7	W Moodie D Norman	w/o
																						1	B Bryan M Bryan	0	6	[10]
																						8	Ł Kubot O Marach	6	4	[4]
								3	L Dlouhý L Paes	2	4
		F Čermák M Mertiňák	4	77	[7]				D Ferrer T Robredo	6	6
		D Ferrer T Robredo	6	62	[10]											D Ferrer T Robredo	62	1
		J Kerr A Sá	6	4	[9]										8	Ł Kubot O Marach	77	6
	WC	J Isner S Querrey	1	6	[11]			WC	J Isner S Querrey	6	2	[8]
								8	Ł Kubot O Marach	4	6	[10]

Bottom half

	First round							Second round							Quarterfinals							Semifinals
								5	B Soares K Ullyett	0	3
		J Melzer R Štěpánek	62	4					M Llodra J-W Tsonga	6	6
		M Llodra J-W Tsonga	77	6												M Llodra J-W Tsonga	66	3
		S Huss R Hutchins	6	62	[3]										4	M Bhupathi M Knowles	78	6
		F López F Verdasco	4	77	[10]				F López F Verdasco	7	4	[10]
								4	M Bhupathi M Knowles	5	6	[12]
																						4	M Bhupathi M Knowles	4	3
																						2	D Nestor N Zimonjić	6	6
								6	M Fyrstenberg M Matkowski	6	6
		T Parrott F Polášek	6	63	[10]				J Chardy G Simon	2	4
		J Chardy G Simon	4	77	[12]										6	M Fyrstenberg M Matkowski	66	78	[4]
		R Lindstedt M Melo	77	3	[14]										2	D Nestor N Zimonjić	78	66	[10]
		J Coetzee J Erlich	63	6	[12]				R Lindstedt M Melo	4	4
								2	D Nestor N Zimonjić	6	6