1991 U.S. Pro Indoor – Singles

Singles
1991 U.S. Pro Indoor
Final
Champion	Ivan Lendl
Runner-up	Pete Sampras
Score	5–7, 6–4, 6–4, 3–6, 6–3
Details
Draw	48
Seeds	16
Events
Singles Doubles
← 1990 · U.S. Pro Indoor · 1992 →

Pete Sampras was the defending champion.

Ivan Lendl won the title, defeating Sampras, 5–7, 6–4, 6–4, 3–6, 6–3 in the final.^[1]

	Semifinals							Final
	1	Ivan Lendl	6	3	6
	3	Brad Gilbert	4	6	4
								1	Ivan Lendl	5	6	6	3	6
								2	Pete Sampras	7	4	4	6	3
	4/WC	John McEnroe	2	4
	2	Pete Sampras	6	6

	First round							Second round							Third round							Quarterfinals
								1	I Lendl	6	7
	Q	D Goldie	4	67					G Raoux	1	5
		G Raoux	6	79											1	I Lendl	77	6
		R Furlan	4	7	6										15	G Muller	65	3
		V Paloheimo	6	5	4				R Furlan	77	3	4
								15	G Muller	65	6	6
																						1	I Lendl	6	79
																						7	M Stich	2	67
								10	D Rostagno	5	3
	Q	G Stafford	2	2				Q	C Adams	7	6
	Q	C Adams	6	6											Q	C Adams	4	4
	Q	J Tarango	5	4											7	M Stich	6	6
	WC	C Caratti	7	6				WC	C Caratti	2	4
								7	M Stich	6	6

	First round							Second round							Third round							Quarterfinals
								3	B Gilbert	6	6
		T Carbonell	6	6					T Carbonell	3	3
	WC	G Bloom	1	1											3	B Gilbert	77	6
		U Riglewski	6	63	6										14	P Haarhuis	63	1
	Q	G Layendecker	3	77	0				U Riglewski	1	3
								14	P Haarhuis	6	6
																						3	B Gilbert	4	6	6
																							K Curren	6	3	0
								11	D Cahill	6	6
		T Högstedt	6	6					T Högstedt	4	2
		R Krishnan	3	1											11	D Cahill	79	3	62
		M Kratzmann	3	77	4											K Curren	67	6	77
		K Curren	6	64	6				K Curren	6	6
								5	J Berger	1	2

	First round							Second round							Third round							Quarterfinals
								6	J Courier	2	4
		J Grabb	6	6					J Grabb	6	6
		P Kühnen	4	4												J Grabb	77	1	3
		A Rahunen	713	7												A Rahunen	63	6	6
		G Connell	611	5					A Rahunen	6	6
								12	M Koevermans	1	2
																							A Rahunen	5	3
																						4/WC	J McEnroe	7	6
								13	W Masur	4	77	77
		C van Rensburg	6	6					C van Rensburg	6	61	65
		B Pearce	2	1											13	W Masur	62	4
		A Mronz	6	6											4/WC	J McEnroe	77	6
		H de la Peña	2	2					A Mronz	1	2
								4/WC	J McEnroe	6	6

	First round							Second round							Third round							Quarterfinals
								8	T Mayotte	4	2
		J-P Fleurian	5	4				Q	W Ferreira	6	6
	Q	W Ferreira	7	6											Q	W Ferreira	5	63
		J Yzaga	6	6											9	P Korda	7	77
		A Järryd	3	3					J Yzaga	4	3
								9	P Korda	6	6
																						9	P Korda	4	0
																						2	P Sampras	6	6
								16/WC	P McEnroe	0	3
		A Antonitsch	61	6	0				M Washington	6	6
		M Washington	77	4	6											M Washington	3	67
		M Šrejber	6	62	6										2	P Sampras	6	79
		S Davis	4	77	3				M Šrejber	2	5
								2	P Sampras	6	7

• Main draw