2012 All Japan Indoor Tennis Championships – Singles

Dominik Meffert was the defending champion but decided not to participate.
Tatsuma Ito won the title, defeating Malek Jaziri 6–7^(5–7), 6–1, 6–2 in the final.

Singles
2012 All Japan Indoor Tennis Championships
Champion	Tatsuma Ito
Runner-up	Malek Jaziri
Score	6–7(5–7), 6–1, 6–2

Main article: 2012 All Japan Indoor Tennis Championships

Seeds

1. Go Soeda (second round)
2. Malek Jaziri (final)
3. Tatsuma Ito (champion)
4. Yuichi Sugita (quarterfinals)
5. Danai Udomchoke (second round)
6. Yang Tsung-hua (second round)
7. Benjamin Mitchell (first round)
8. Harri Heliövaara (second round)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• ITF = ITF entry
• PR = Protected ranking
• SR = Special ranking
• SE = Special exempt
• JE = Junior exempt
• JR = Junior Accelerator Programme entrant
• CO = College Accelerator Programme entrant
• NG = Next Gen Accelerator Program entrant
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Semifinals							Final
		Hiroki Moriya	4	2
	3	Tatsuma Ito	6	6
								3	Tatsuma Ito	65	6	6
								2	Malek Jaziri	77	1	2
		Samuel Groth	62	3
	2	Malek Jaziri	77	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	G Soeda	6	6
	Q	P Raja	4	4				1	G Soeda	69	1
	WC	Y Uchiyama	5	1					Hiroki Moriya	711	6
		Hiroki Moriya	7	6												Hiroki Moriya	6	5	77
		S Rieschick	6	6												S Rieschick	4	7	65
		A Weintraub	4	4					S Rieschick	6	6
		Z Zhang	1	6	3			6	T-h Yang	2	0
	6	T-h Yang	6	3	6																		Hiroki Moriya	4	2
	3	T Ito	77	7																		3	T Ito	6	6
		J Lemke	62	5				3	T Ito	3	6	6
		R Klaasen	64	78	4			Q	M Barton	6	4	0
	Q	M Barton	77	66	6										3	T Ito	77	64	6
		Y Bhambri	6	6												Y Bhambri	65	77	3
		C Niland	1	3					Y Bhambri	3	6	6
	WC	T Niki	5	3				5	D Udomchoke	6	4	2
	5	D Udomchoke	7	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	8	H Heliövaara	7	6
	WC	Shota Tagawa	5	4				8	H Heliövaara	4	6	65
		S Groth	1	6	7				S Groth	6	4	77
	Q	B Klein	6	3	5											S Groth	77	712
		Y-k Lim	3	4											4	Y Sugita	64	610
	WC	T Suzuki	6	5r					Y-k Lim	5	2
		T Chen	63	3				4	Y Sugita	7	6
	4	Y Sugita	77	6																			S Groth	62	3
	7	B Mitchell	7	2	4																	2	M Jaziri	77	6
		J Wang	5	6	6				J Wang	6	2	6
		J Millman	69	5					K Čapkovič	1	6	3
		K Čapkovič	711	7												J Wang	6	4	3
		Michael Look	6	77											2	M Jaziri	0	6	6
	Q	Y Chu-huan	4	64					M Look	5	5
		D Molchanov	79	65	0			2	M Jaziri	7	7
	2	M Jaziri	67	77	6

References

• Main Draw
• Qualifying Draw