Singles
2009 LA Tennis Open
Champion	Sam Querrey
Runner-up	Carsten Ball
Score	6–4, 3–6, 6–1
Draw	28 (4 Q / 3 WC )
Seeds	8

Juan Martín del Potro was the defending champion, but chose not to participate that year.

Seeds

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

Main draw

Finals

	Semifinals							Final
	1	Tommy Haas	3	5
	6	Sam Querrey	6	7
								6	Sam Querrey	6	3	6
								Q	Carsten Ball	4	6	1
	Q	Carsten Ball	7	77
		Leonardo Mayer	5	63

Top half

	First round							Second round							Quarterfinals							Semifinals
								1	T Haas	6	6
	WC	J Levine	6	6				WC	J Levine	1	3
		B Reynolds	2	3											1	T Haas	77	6
		Y-h Lu	5	2											8	M Safin	63	2
		E Gulbis	7	6					E Gulbis	6	3	4
	SE	R Ginepri	6	3	4			8	M Safin	2	6	6
	8	M Safin	3	6	6																	1	T Haas	3	5
																						6	S Querrey	6	7
								4	D Sela	6	3	6
		V Spadea	0	0					R Kendrick	4	6	1
		R Kendrick	6	6											4	D Sela	3	5
	WC	T Dent	4	6	3										6	S Querrey	6	7
	Q	R Sweeting	6	2	6			Q	R Sweeting	3	77	3
		D Istomin	2	0				6	S Querrey	6	65	6
	6	S Querrey	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	B Becker	68	63
		J Isner	710	77					J Isner	6	713
	SE	F Dancevic	63	3					M Baghdatis	3	611
		M Baghdatis	77	6												J Isner	4	4
	Q	C Ball	6	78											Q	C Ball	6	6
		M Gicquel	2	66				Q	C Ball	6	0
								3	D Tursunov	4	1r
																						Q	C Ball	7	77
	5	I Kunitsyn	7	6																			L Mayer	5	63
	Q	S Devvarman	5	2				5	I Kunitsyn	65	79	3
		L Mayer	6	6					L Mayer	77	67	6
	Q	J Ouanna	2	3												L Mayer	w/o
	WC	C Guccione	6	6											2	M Fish
		K Kim	1	4				WC	C Guccione	77	612	4
								2	M Fish	63	714	6

External links

• Main draw
• Qualifying draw