Singles
1989 Cincinnati Open
Champion	Brad Gilbert
Runner-up	Stefan Edberg
Score	6–4, 2–6, 7–6
Draw	64
Seeds	16

Mats Wilander was the defending champion but lost in the semifinals to Stefan Edberg.

Brad Gilbert won in the final 6–4, 2–6, 7–6 against Edberg.

Seeds

Draw

Finals

	Semifinals							Final
	1	Boris Becker	6	3	4
	5	Brad Gilbert	3	6	6
								5	Brad Gilbert	6	2	7
								2	Stefan Edberg	4	6	6
	3	Mats Wilander	6	6
	2	Stefan Edberg	7	7

Top half

Section 1

	First round							Second round							Third round							Quarterfinals
	1	B Becker	6	7
		R Leach	3	6				1	B Becker	6	6
	Q	P McEnroe	6	6				Q	P McEnroe	4	1
	Q	M Knowles	1	0											1	B Becker	6	6
	Q	M Ruah	2	1												V Amritraj	1	1
		V Amritraj	6	6					V Amritraj	6	7
		O Delaître	7	6					O Delaître	3	6
	15	A Volkov	6	1																		1	B Becker	6	6
	9	A Järryd	3	6	3																	8	J Yzaga	1	2
		M Davis	6	4	6				M Davis	6	2	6
		O Rahnasto	1r						J Brown	3	6	4
		J Brown	4													M Davis	4	6	6
		R Van't Hof	3	6	2										8	J Yzaga	6	2	7
		D Visser	6	3	6				D Visser	4	2
		N Marques	3	3				8	J Yzaga	6	6
	8	J Yzaga	6	6

Section 2

	First round							Second round							Third round							Quarterfinals
	4	M Chang	6	6
		N Broad	1	1				4	M Chang	6	5	7
		J Grabb	6	6					J Grabb	3	7	6
		J Frawley	1	3											4	M Chang	6	6
		M Kratzmann	1	2											14	J Courier	3	3
		R Seguso	6	6					R Seguso	6	1	4
		T Wilkison	2	4				14	J Courier	3	6	6
	14	J Courier	6	6																		4	M Chang	6	6	3
	11	J Fitzgerald	4	4																		5	B Gilbert	3	7	6
		P Sampras	6	6					P Sampras	7	2	6
		M Nido	6	0	4				A Olhovskiy	5	6	3
		A Olhovskiy	1	6	6											P Sampras	7	3	4
	WC	J Ross	3	0											5	B Gilbert	6	6	6
		J Stoltenberg	6	6					J Stoltenberg	3	2
	Q	A Moreno	3	4				5	B Gilbert	6	6
	5	B Gilbert	6	6

Bottom half

Section 3

	First round							Second round							Third round							Quarterfinals
	6	A Krickstein	6	6	6
		A Cherkasov	7	4	1			6	A Krickstein	6	7
		C Bailey	6	7					C Bailey	3	5
	LL	M Petchey	2	6											6	A Krickstein	6	4	5
		T Tulasne	3	1											12	A Gómez	3	6	7
		D Pate	6	6					D Pate	4	3
		W Masur	4	4				12	A Gómez	6	6
	12	A Gómez	6	6																		12	A Gómez	0	6
	13	P Lundgren	5	2																		3	M Wilander	6	7
		N Kroon	7	6					N Kroon	6	6
		P Aldrich	6	6					P Aldrich	3	3
	Q	M Rincon	1	2												N Kroon	3	2
		J Rive	4	6	6										3	M Wilander	6	6
		R Matuszewski	6	4	2				J Rive	4	4
	Q	B Talbot	3	2				3	M Wilander	6	6
	3	M Wilander	6	6

Section 4

	First round							Second round							Third round							Quarterfinals
	7	A Chesnokov	6	7
	Q	S Salumaa	0	5				7	A Chesnokov	3	4
		M Schapers	4	6	3				G Muller	6	6
		G Muller	6	2	6											G Muller	4	2
		É Winogradsky	3	6	3										10	J Svensson	6	6
	Q	F Hunt	6	1	6			Q	F Hunt
		M Anger	1	3				10	J Svensson	w/o
	10	J Svensson	6	6																		10	J Svensson	4	6
	16	D Rostagno	6	5	3																	2	S Edberg	6	7
		J Frana	3	7	6				J Frana	6	6	2r
		R Krishnan	1	6	7				R Krishnan	4	7	4
	WC	B Scanlon	6	3	6											R Krishnan	4	6	4
	WC	B Pearce	3	6	7										2	S Edberg	6	3	6
	WC	M Robertson	6	4	5			WC	B Pearce	4	1
		B Moir	4	3				2	S Edberg	6	6
	2	S Edberg	6	6

References

• 1989 Cincinnati Open Draw