Men's singles
2001 AIG Japan Open Tennis Championships
Champion	Lleyton Hewitt
Runner-up	Michel Kratochvil
Score	6–4, 6–2
Draw	56 (7 Q / 5 WC )
Seeds	16

Sjeng Schalken was the defending champion but lost in the quarterfinals to Michel Kratochvil.

Lleyton Hewitt won in the final 6–4, 6–2 against Kratochvil.

Seeds

The top eight seeds received a bye to the second round.

Draw

Finals

	Semifinals							Final
	1	Lleyton Hewitt	6	6
		James Blake	4	0
								1	Lleyton Hewitt	6	6
								5	Michel Kratochvil	4	2
		Karol Kučera	0	3
	5	Michel Kratochvil	6	6

Top half

Section 1

	First round							Second round							Third round							Quarterfinals
								1	L Hewitt	6	6
		J Delgado	4	4					M-K Goellner	2	2
		M-K Goellner	6	6											1	L Hewitt	6	6
	Q	J Thomas	3	2											15	M Russell	1	1
		C Mamiit	6	6					C Mamiit	6	4	3
		N Godwin	4	61				15	M Russell	3	6	6
	15	M Russell	6	77																		1	L Hewitt	4	6	6
	11	N Massú	6	6																		8	F Clavet	6	4	2
		E Kempes	4	4				11	N Massú	6	77
		Y-I Yoon	3	1					T Zíb	3	64
		T Zíb	6	6											11	N Massú	3	4
		N Thomann	3	1											8	F Clavet	6	6
		T Behrend	6	6					T Behrend	67	2
								8	F Clavet	79	6

Section 2

	First round							Second round							Third round							Quarterfinals
								4	J Björkman	6	6
	Q	M Onoda	4	4				WC	H Kondo	1	3
	WC	H Kondo	6	6											4	J Björkman	1	5
		J Blake	6	6												J Blake	6	7
	WC	Y Ishii	3	4					J Blake	77	7
	Q	R Žitko	2	77	1			14	W Arthurs	64	5
	14	W Arthurs	6	63	6																		J Blake	4	6	6
	10	H Levy	6	6																		7	M Ríos	6	4	1
	Q	S Iwabuchi	3	3				10	H Levy	5	0
	Q	D Udomchoke	6	4	6			Q	D Udomchoke	7	6
		B Cowan	2	6	3										Q	D Udomchoke	3	2
		B Black	6	6											7	M Ríos	6	6
		E Taino	4	1					B Black	2	5
								7	M Ríos	6	7

Bottom half

Section 3

	First round							Second round							Third round							Quarterfinals
								6	M Chang	6	6
		A Pretzsch	63	77	6				A Pretzsch	3	4
		P Srichaphan	77	65	1										6	M Chang	63	2
		S Sargsian	6	6											WC	T Suzuki	77	6
		A Sá	2	3					S Sargsian	5	6	4
	WC	T Suzuki	5	6	6			WC	T Suzuki	7	4	6
	12	A Ilie	7	2	4																	WC	T Suzuki	3	3
	16	R Delgado	6	6																			K Kučera	6	6
	WC	G Motomura	4	4				16	R Delgado	4	4
		K Kučera	6	4	6				K Kučera	6	6
		A Simoni	3	6	1											K Kučera	6	6
		M Lee	4	2											3	R Schüttler	2	2
		M Larsson	6	6					M Larsson	3	5
								3	R Schüttler	6	7

Section 4

	First round							Second round							Third round							Quarterfinals
								5	M Kratochvil	77	1	6
		O Fukárek	6	77					O Fukárek	63	6	4
	Q	D Vacek	2	63											5	M Kratochvil	6	6
		H-T Lee	713	6											9	L Burgsmüller	3	2
		M Hantschk	611	4					H-T Lee	6	3	5
		M Llodra	63	6	2			9	L Burgsmüller	3	6	7
	9	L Burgsmüller	77	2	6																	5	M Kratochvil	6	6
	13	Á Calatrava	3	1																		2	S Schalken	3	4
		I Heuberger	6	6					I Heuberger	3	6	6
	Q	N Behr	6	6				Q	N Behr	6	4	4
	WC	T Terachi	2	1												I Heuberger	2	2
		I Labadze	77	3	5										2	S Schalken	6	6
		C Vinck	63	6	7				C Vinck	3	4
								2	S Schalken	6	6

References

• 2001 AIG Japan Open Tennis Championships Draw