Singles
2009 Busan Open Challenger Tennis
Champion	Danai Udomchoke
Runner-up	Blaž Kavčič
Score	6–2, 6–2

Go Soeda was the defending champion but lost to his compatriot Yuichi Sugita in the first round. Danai Udomchoke became the new champion after his win against Blaž Kavčič in the final (6–2, 6–2).

Seeds

Draw

Final four

	Semifinals							Final
	8	Blaž Kavčič	6	7
	4	Im Kyu-tae	2	5
								8	Blaž Kavčič	2	2
								2	Danai Udomchoke	6	6
	3	Florian Mayer	1	1
	2	Danai Udomchoke	6	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	G Soeda	4	4
		Y Sugita	6	6					Y Sugita	5	3
		T Matsui	6	4	6				T Matsui	7	6
		J Minář	3	6	4											T Matsui	1	2
		C Eaton	6	6											8	B Kavčič	6	6
	Q	S-Y Kim Jr.	4	3					C Eaton	2	4
	WC	Y B Seo	2	1				8	B Kavčič	6	6
	8	B Kavčič	6	6																		8	B Kavčič	6	7
	4	K-t Im	6	69	6																	4	K-t Im	2	5
		T Chen	2	7	1			4	K-t Im	6	7
		J Mitsuhashi	3	4				WC	J-S An	2	5
	WC	J-S An	6	6											4	K-t Im	6	4	6
		M Semjan	3	4												A-u-H Qureshi	4	6	3
		A-u-H Qureshi	6	6					A-u-H Qureshi	7	6
		T Iwami	6	6					T Iwami	65	4
	5	K Pless	3	4

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	M Chiudinelli	6	6
	Q	G Motomura	2	1				6	M Chiudinelli	4	4
		L Lacko	6	6					L Lacko	6	6
	Q	S-J Cho	2	4												L Lacko	2	3
	Q	H Kondo	2	2											3	F Mayer	6	6
		A Juška	6	6					A Juška	2	1
		W-S Jun	4	0				3	F Mayer	6	6
	3	F Mayer	6	6																		3	F Mayer	1	1
	7	S Groth	4	7	6																	2	D Udomchoke	6	6
		D Lojda	6	5	1			7	S Groth	6	6
		K Čapkovič	6	7					K Čapkovič	3	2
	WC	Y-K Lim	1	5											7	S Groth	6	3	4
		G Panfil	6	65	5										2	D Udomchoke	3	6	6
	WC	SY Jeong	4	7	7			WC	SY Jeong	1	0
		T Ito	6	2	3			2	D Udomchoke	6	6
	2	D Udomchoke	3	6	6

References

• Main Draw
• Qualifying Draw