2005 AIG Japan Open Tennis Championships – Men's singles

Jiří Novák was the defending champion, but did not participate.

Men's singles
2005 AIG Japan Open Tennis Championships
Champion	Wesley Moodie
Runner-up	Mario Ančić
Score	1–6, 7–6(9–7), 6–4
Draw	48 (6 Q / 4 WC )
Seeds	16

Main article: 2005 AIG Japan Open Tennis Championships

Wesley Moodie won the title, defeating Mario Ančić in the final 1–6, 7–6^(9–7), 6–4.^[1]

Seeds

All seeds receive a bye into the second round.

1. Mariano Puerta (third round)
2. Radek Štěpánek (quarterfinals)
3. Robby Ginepri (quarterfinals)
4. Taylor Dent (quarterfinals)
5. Mario Ančić (final)
6. Mikhail Youzhny (second round)
7. Jarkko Nieminen (semifinals)
8. Vince Spadea (second round)
9. Paradorn Srichaphan (third round)
10. Kenneth Carlsen (third round)
11. Luis Horna (third round)
12. Cyril Saulnier (third round)
13. Gilles Müller (third round)
14. Ivo Minář (second round)
15. Robin Vik (second round)
16. Juan Mónaco (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

	Quarterfinals							Semifinals							Final
		Marcos Baghdatis	1	64
	5	Mario Ančić	6	77
								5	Mario Ančić	6	6
									Björn Phau	2	1
	3	Robby Ginepri	4	3
		Björn Phau	6	6
															5	Mario Ančić	6	67	4
																Wesley Moodie	1	79	6
	7	Jarkko Nieminen	6	5	77
	4	Taylor Dent	4	7	63
								7	Jarkko Nieminen	6	1	64
									Wesley Moodie	4	6	77
		Wesley Moodie	77	78
	2	Radek Štěpánek	62	66

Top half

Section 1

	First round							Second round							Third round							Quarterfinals
								1	M Puerta	6	6
	Q	T Iwami	69	4				Q	E Taino	3	4
	Q	E Taino	711	6											1	M Puerta	2	713	5
		M Baghdatis	6	6												M Baghdatis	6	611	7
		J Tipsarević	4	4					M Baghdatis	6	6
								14	I Minář	4	2
																							M Baghdatis	1	64
																						5	M Ančić	6	77
								12	C Saulnier	6	65	7
	Q	R Sluiter	6	6				Q	R Sluiter	3	77	5
		L Burgsmüller	3	1											12	C Saulnier	2	1
	Q	J-M Gambill	6	5	6										5	M Ančić	6	6
		P Wessels	2	7	3			Q	J-M Gambill	6	3	4
								5	M Ančić	3	6	6

Section 2

	First round							Second round							Third round							Quarterfinals
								3	R Ginepri	6	6
	WC	G Motomura	2	4				PR	A Popp	4	0
	PR	A Popp	6	6											3	R Ginepri	6	6
		A Waske	3	77	77										13	G Müller	4	4
		J Gimelstob	6	65	63				A Waske	5	6	1
								13	G Müller	7	4	6
																						3	R Ginepri	4	3
																							B Phau	6	6
								10	K Carlsen	77	711
	WC	T Ittogi	0	1					N Lapentti	61	69
		N Lapentti	6	6											10	K Carlsen	1	2
		S Koubek	79	4	65											B Phau	6	6
		B Phau	67	6	77				B Phau	6	7
								8	V Spadea	4	5

Bottom half

Section 3

	First round							Second round							Third round							Quarterfinals
								7	J Nieminen	6	6
	Q	G Soeda	4	6	2				R Schüttler	1	1
		R Schüttler	6	4	6										7	J Nieminen	2	78	7
		P Kohlschreiber	3	61											9	P Srichaphan	6	66	5
	WC	T Terachi	6	77				WC	T Terachi	1	4
								9	P Srichaphan	6	6
																						7	J Nieminen	6	5	77
																						4	T Dent	4	7	63
								16	J Mónaco	6	1	4
		W Arthurs	6	1	77				W Arthurs	4	6	6
	WC	T Suzuki	3	6	62											W Arthurs	4	77	3
	PR	D Tursunov	3	6	6										4	T Dent	6	65	6
		G García López	6	4	1			PR	D Tursunov	3	63
								4	T Dent	6	77

Section 4

	First round							Second round							Third round							Quarterfinals
								6	M Youzhny	1	6	3
		W Moodie	6	6					W Moodie	6	3	6
		J Wang	1	4												W Moodie	77	62	6
		D Udomchoke	65	4											11	L Horna	64	77	4
		R Karanušić	77	6					R Karanušić	2	5
								11	L Horna	6	7
																							W Moodie	77	78
																						2	R Štěpánek	62	66
								15	R Vik	2	4
	Q	D Gremelmayr	2	63					K Kim	6	6
		K Kim	6	77												K Kim	1	3
		J Vaněk	77	77											2	R Štěpánek	6	6
		L Dlouhý	64	65					J Vaněk	5	4
								2	R Štěpánek	7	6