1971 South American Open – Men's singles

Men's singles
1971 South American Open
Final
Champion	Željko Franulović
Runner-up	Ilie Năstase
Score	6–3, 7–6, 6–1
Events
Singles men women Doubles men women
← 1970 · South American Open · 1972 →

Željko Franulović defeated Ilie Năstase 6–3, 7–6, 6–1 to win the 1971 South American Open singles competition. Franulović was the defending champion.

	Final
		Ilie Năstase	3	6	1
		Željko Franulović	6	7	6

	First round									Second round									Quarterfinals									Semifinals
		I Năstase	6	6	6
		O Escribano	2	4	4						I Năstase	3	7	6	6
		M Holeček	6	7	6						M Holeček	6	6	3	0
		P Cornejo	3	5	3															I Năstase	6	6	6
		T Gorman	6	6	6															I Gulyás	3	3	4
		R Graetz	3	3	1						T Gorman	6	2	0	2
		I Gulyás	6	6	6						I Gulyás	2	6	6	6
		E Zuleta	1	0	3																								I Năstase	6	7	6
		C Graebner	6	6	6																								J Leschly	1	5	3
		N Herrero	2	1	3						C Graebner	1	3	6	1
		J Leschly	2	6	4	6	6				J Leschly	6	6	1	6
		T Vázquez	6	4	6	3	3													J Leschly	6	4	6	6
		C Richey	6	6	6															C Richey	1	6	3	2
		R Cano	0	2	4						C Richey	3	6	4	7	6
		G Vilas									G Vilas	6	4	6	6	2

	First round									Second round									Quarterfinals									Semifinals
		Z Franulović	6	6	6	6
		G Romani	7	3	2	4					Z Franulović	6	6	6
		J Ganzábal	6	6	6						J Ganzábal	2	4	1
		E Soriano	4	2	2															Z Franulović	6	7	7	6
		F Froehling	7	6	6															F Froehling	7	6	6	4
		L Álvarez	6	4	2						F Froehling	7	7	7
		J Pinto Bravo	6	6	6						J Pinto Bravo	6	5	5
		T Koch	1	4	3																								Z Franulović	2	7	6	6
		R Aubone	6	7	6																								S Smith	6	6	1	3
		J Fillol Sr.	2	6	4						R Aubone	4	0	7	6	7
		M Lynch									M Lynch	6	6	5	3	5
																				R Aubone	2	4	4
		J Loyo-Mayo	7	6	6															S Smith	6	6	6
		P Rodríguez	5	2	3						J Loyo-Mayo	1	2	6	3
		R Aubone	2	0	1						S Smith	6	6	2	6
		S Smith	6	6	6

• 1971 ATP Buenos Aires Singles draw