Singles
1989 Benson and Hedges Open
Champion	Ramesh Krishnan
Runner-up	Amos Mansdorf
Score	6–4, 6–0
Draw	32 (4 Q / 3 WC )
Seeds	8

Ramesh Krishnan defeated Amos Mansdorf 6–4, 6–0 to win the 1989 Heineken Open singles competition. Mansdorf was the defending champion.

Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.

Draw

Key

• Q – Qualifier
• WC –Wild card
• LL – l=Lucky loser

	First round							Second round							Quarterfinals							Semifinals							Final
	1	A Mansdorf	6	6
		M Oosting	4	4				1	A Mansdorf	7	6
	LL	J Cunha-Silva	1	4				Q	D Wheaton	5	1
	Q	D Wheaton	6	6											1	A Mansdorf	6	2	6
		C Pridham	7	6	5											P Wekesa	4	6	2
		M Westphal	6	7	7				M Westphal	6	3	7
		P Wekesa	7	6					P Wekesa	4	6	9
	7	S Matsuoka	6	2																		1	A Mansdorf	6	6
	4	M Schapers	4	4																			R Smith	3	2
		P Chamberlin	6	6					P Chamberlin	2	6
		R Smith	6	7					R Smith	6	7
	WC	S Lewis	3	6												R Smith	7	6
		S Guy	1	7	1											K Evernden	5	2
		K Evernden	6	6	6				K Evernden	6	3	6
		U Riglewski	6	4	6				U Riglewski	4	6	4
	5	R Matuszewski	1	6	2																								1	Amos Mansdorf	4	0
	WC/6	H de la Peña	6	3	6																								2	Ramesh Krishnan	6	6
	Q	G Pozzi	3	6	2			WC/6	H de la Peña	6	5	2
		B Dyke	2	7	4				G Michibata	3	7	6
		G Michibata	6	6	6											G Michibata	1	3
		R Reneberg	6	4	6											R Reneberg	6	6
		D Marcelino	3	6	3				R Reneberg	6	6
		V Paloheimo	5	7	3			3	M Šrejber	3	4
	3	M Šrejber	7	6	6																		R Reneberg	6	3
	8	J Grabb	6	7																		2	R Krishnan	7	6
	Q	J Ross	4	5				8	J Grabb	1	6	6
		J Brown	4	6	7			Q	R Weiss	6	2	0
	Q	R Weiss	6	1	9										8	J Grabb	5	0
		T Svantesson	6	7											2	R Krishnan	7	6
	WC	A Lobb	2	6					T Svantesson	3	3
		M Kures	1	6				2	R Krishnan	6	6
	2	R Krishnan	6	7

External links

• ATP Men's Singles draw