Singles
1989 Singapore Open
Final
Champion	Kelly Jones
Runner-up	Amos Mansdorf
Score	6–1, 7–5
Details
Draw	32
Seeds	8
Events
Singles Doubles
Singapore Open · 1990 →

Kelly Jones won in the final 6–1, 7–5 against Amos Mansdorf.^{[1] [2]}

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

	First round							Second round							Quarterfinals							Semifinals							Final
	1	K Curren	6	6
		G Michibata	1	1				1	K Curren	6	6
	Q	Young Min-kwon	6	3	4				J Carlsson	3	3
		J Carlsson	4	6	6										1	K Curren	6	6
		J Stoltenberg	6	5	4										7	J Pugh	4	2
		T Nydahl	3	7	6				T Nydahl	0	6
		G Connell	6	3				7	J Pugh	6	7
	7	J Pugh	7	6																		1	K Curren
	3	J Fitzgerald	6	1																		Q	K Jones	w/o
		R Fromberg	7	6					R Fromberg	7	3	6
		J Grabb	6	6					J Grabb	6	6	7
		J Rive	3	3												J Grabb	4	6	5
		M Anger	4	6	2										Q	K Jones	6	2	7
	Q	K Jones	6	4	6			Q	K Jones	6	6
	WC	R Leach	6	6				WC	R Leach	3	2
	6	R Matuszewski	2	2																									Q	Kelly Jones	6	7
	5	M Šrejber	4	6	3																								2	Amos Mansdorf	1	5
		O Rahnasto	6	2	6				O Rahnasto	3	6	3
		V Amritraj	0	6					P Chamberlin	6	2	6
		P Chamberlin	6	7												P Chamberlin	3	4
		G Pozzi	6	6	6										4	W Masur	6	6
		P Wekesa	3	7	2				G Pozzi	4	2
		G Layendecker	6	1				4	W Masur	6	6
	4	W Masur	7	6																		4	W Masur	6	6
	8	K Evernden	7	6																		2	A Mansdorf	7	7
		Z Ali	6	4				8	K Evernden	6	6
		C Saceanu	6	6					C Saceanu	4	2
	Q	L Scott	2	4											8	K Evernden	6	1
		D Pate	6	2											2	A Mansdorf	7	6
		T Svantesson	7	6					T Svantesson	1	2
	Q	M Christensen	3	6	2			2	A Mansdorf	6	6
	2	A Mansdorf	6	4	6

• ITF tournament edition details