1977 ATP Buenos Aires (April) – Singles

Main article: 1977 ATP Buenos Aires (April)

Guillermo Vilas defeated Wojtek Fibak 6–4, 6–3, 6–0 to win the April 1977 ATP Buenos Aires singles competition. Vilas 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.

1. Guillermo Vilas (Champion)
2. Wojciech Fibak (Final)

Draw

Key

• NB: All rounds up to but not including the final were the best of 3 sets. The final was the best of 5 sets.

Final

	Final
	1	Guillermo Vilas	6	6	6
	2	Wojciech Fibak	4	3	0

Section 1

	First Round							Quarterfinals							Semifinals
	1	Guillermo Vilas	6	6
		Roberto Gratz	1	3
								1	Guillermo Vilas	6	6
									Fernando Dalla Fontana	2	4
		Fernando Dalla Fontana	6	6
		Julián Ganzábal	0	0
															1	Guillermo Vilas	6	6
																Paolo Bertolucci	3	2
		Paolo Bertolucci	6	7
		Jose Santiago	4	5
									Paolo Bertolucci	6	9
									Ion Țiriac	3	7
		Ion Țiriac	6	6
		Lorenzo Soriano	3	2

Section 2

	First Round							Quarterfinals							Semifinals
		Ricardo Cano	3	6	6
		Lito Álvarez	6	2	2
									Ricardo Cano	6	6
									Balázs Taróczy	3	3
		Balázs Taróczy	6	6
		Roberto Aubone	4	2
																Ricardo Cano	3	7
															2	Wojciech Fibak	6	9
		Cliff Richey	6	6
		Carlos Landó	1	2
									Cliff Richey	7	3
								2	Wojciech Fibak	9	6
		Hector Romani	3	3
		Wojciech Fibak	6	6

External links

• 1977 ATP Buenos Aires (April) draw