Singles
1989 Tokyo Indoor
Champion	Aaron Krickstein
Runner-up	Carl-Uwe Steeb
Score	6–2, 6–2
Draw	32
Seeds	8

Boris Becker was the defending champion, but did not participate this year.

Aaron Krickstein won the tournament, beating Carl-Uwe Steeb in the final, 6–2, 6–2.

Seeds

Draw

Finals

	Semifinals							Final
	1	Stefan Edberg	6	6	6
	4	Aaron Krickstein	2	7	7
								4	Aaron Krickstein	6	6
								5	Carl-Uwe Steeb	2	2
	5	Carl-Uwe Steeb	6	6
		Darren Cahill	4	4

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	S Edberg	6	6
	Q	G Michibata	1	3				1	S Edberg	6	6
		T Högstedt	3	2					J Fitzgerald	2	3
		J Fitzgerald	6	6											1	S Edberg	6	7
	WC	T Tsuchihashi	6	0												H Leconte	1	6
		H Leconte	7	6					H Leconte	4	7	6
		E Jelen	4	6	6				E Jelen	6	6	4
	7	K Curren	6	4	4																	1	S Edberg	6	6	6
	4	A Krickstein	6	6	7																	4	A Krickstein	2	7	7
		S Živojinović	3	7	6			4	A Krickstein	3	6	6
		J Pugh	3	5				Q	B Dyke	6	3	4
	Q	B Dyke	6	7											4	A Krickstein	6	6
		S Davis	3	3												G Connell	3	4
		G Connell	6	6					G Connell	2	6	6
	WC	H Tanizawa	0	2				6	A Gómez	6	1	4
	6	A Gómez	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	5	C-U Steeb	6	6
	Q	P McEnroe	4	2				5	C-U Steeb	6	6
		L Shiras	6	6					L Shiras	1	4
	WC	T Ho	4	2											5	C-U Steeb	6	7
		B Drewett	2	7	6										Q	R Leach	4	5
	Q	R Leach	6	6	7			Q	R Leach	4	7	6
		R Reneberg	7	3	2			3	J Hlasek	6	6	4
	3	J Hlasek	6	6	6																	5	C-U Steeb	6	6
	8	D Goldie	6	6																			D Cahill	4	4
		P Chamberlin	4	4				8	D Goldie	6	4
		R Matuszewski	6	6	2				D Cahill	7	6
		D Cahill	7	3	6											D Cahill	3	7	6
		S Matsuoka	7	2	5											R Agénor	6	6	4
		R Agénor	6	6	7				R Agénor	6	6
		W Masur	3	4				2	A Agassi	0	3
	2	A Agassi	6	6

References

• Main draw