Singles
2009 Calabasas Pro Tennis Championships
Champion	Donald Young
Runner-up	Michael Russell
Score	7–6(4), 6–1

Vince Spadea was the defending champion, but he was eliminated by qualifier Luka Gregorc already in the first round.
Donald Young defeated his compatriot Michael Russell 7–6(4), 6–1 in the final.

Seeds

Draw

Finals

	Semifinals							Final
		Donald Young	6	6
		Michael Yani	3	1
									Donald Young	6	6
								2	Michael Russell	4	3
	Q	Cecil Mamiit	1	66
	2	Michael Russell	6	7

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	K Kim	6	6
		T Widom	1	4				1	K Kim	4	3
		V Spadea	3	7	4			Q	L Gregorc	6	6
	Q	L Gregorc	6	64	6										Q	L Gregorc	3	1
	Q	L Sorensen	6	2	2											D Young	6	6
		D Young	4	6	6				D Young	6	6
		R Ghedin	3	4				5	T Dent	3	2
	5	T Dent	6	6																			D Young	6	6
	3	J Levine	7	6																			M Yani	3	1
		M Felder	61	0				3	J Levine	w/o
	WC	P Amritraj	6	6				WC	P Amritraj
		I Bozoljac	3	2											WC	P Amritraj	2	2
	WC	G Sacks	7	2	2											M Yani	6	6
	WC	B Klahn	64	6	6			WC	B Klahn	66	7	65
		M Yani	6	6					M Yani	7	64	7
	6	R Karanušić	3	4

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	8	C Salamanca	6	5	1
		M Matosevic	3	7	6				M Matosevic	4	3
	Q	C Mamiit	5	6	6			Q	C Mamiit	6	6
		M Lammer	7	2	1										Q	C Mamiit	6	6
		L Cook	3	1												G Soeda	4	2
		S González	6	6					S González	4	2
		G Soeda	64	6	6				G Soeda	6	6
	4	S Giraldo	7	4	4																	Q	C Mamiit	1	66
	7	G Žemlja	6	6																		2	M Russell	6	7
	ALT	A González	2	0				7	G Žemlja	6
		N Lindahl	6	6					N Lindahl	2	r
	WC	S Johnson	4	4											7	G Žemlja	2	4
		J Witten	63	2											2	M Russell	6	6
		A Kuznetsov	7	6					A Kuznetsov	2	6	0
	Q	F Vicente	4	4				2	M Russell	6	4	6
	2	M Russell	6	6

References

• Main Draw
• Qualifying Draw