1974 South American Championships – Singles
# 1974 South American Championships – Singles

Guillermo Vilas was the defending champion and won in the final 6–3, 0–6, 7–5, 6–2 against Manuel Orantes.

## Draw

### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking
* NB: All rounds up to but not including the semifinals were the best of 3 sets. The semifinals and final were the best of 5 sets.

### Final

| Final | Final | Final | Final | Final | Final | Final |
| - | - | - | - | - | - | - |
| | Guillermo Vilas | 6 | 0 | 7 | 6 | |
| | Manuel Orantes | 3 | 6 | 5 | 2 | |

### Section 1

| First round | First round | First round | First round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| G Vilas | 6 | 6 | | | | | | | | | | | | |
| R Fisher | 1 | 4 | | G Vilas | 6 | 6 | | | | | | | | |
| R Keldie | 0 | 7 | 4 | S Baranyi | 1 | 4 | | | | | | | | |
| S Baranyi | 6 | 6 | 6 | | | | G Vilas | 6 | 6 | | | | | |
| H Kary | 6 | 2 | | | | | R Benavides | 2 | 4 | | | | | |
| R Benavides | 7 | 6 | | R Benavides | 6 | 6 | | | | | | | | |
| J Lloyd | 3 | 1 | | T Vázquez | 2 | 4 | | | | | | | | |
| T Vázquez | 6 | 6 | | | | | | | | | G Vilas | 6 | 6 | 6 |
| B Mottram | 6 | 3 | 4 | | | | | | | | J Mandarino | 1 | 3 | 4 |
| C Kirmayr | 1 | 6 | 6 | C Kirmayr | 3 | 3 | | | | | | | | |
| B Prajoux | 1 | 6 | 2 | J Mandarino | 6 | 6 | | | | | | | | |
| J Mandarino | 6 | 1 | 6 | | | | J Mandarino | 6 | 2 | 6 | | | | |
| P Cornejo | 6 | 6 | | | | | Ž Franulović | 4 | 6 | 4 | | | | |
| H Varela | 2 | 2 | | P Cornejo | 1 | 5 | | | | | | | | |
| Ž Franulović | 6 | 4 | 6 | Ž Franulović | 6 | 7 | | | | | | | | |
| F Mastelli | 4 | 6 | 2 | | | | | | | | | | | |

### Section 2

| First round | First round | First round | First round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| J Fillol | 6 | 6 | | | | | | | | | | | |
| L Baraldi | 1 | 3 | | J Fillol | 6 | 0 | | | | | | | |
| P Rodríguez | 6 | 3 | 5 | R Cano | 7 | 6 | | | | | | | |
| R Cano | 4 | 6 | 7 | | | | R Cano | 4 | 4 | | | | |
| I Molina | 4 | 6 | 6 | | | | I Molina | 6 | 6 | | | | |
| | 6 | 4 | 4 | I Molina | 6 | 6 | | | | | | | |
| J Ganzábal | 6 | 6 | | J Ganzábal | 3 | 3 | | | | | | | |
| G Aubone | 4 | 2 | | | | | | | | I Molina | 1 | 1 | 3 |
| J Velasco Sr. | 1 | 6 | 0 | | | | | | | M Orantes | 6 | 6 | 6 |
| V Pecci | 6 | 3 | 6 | V Pecci | 6 | 6 | | | | | | | |
| R Dowdeswell | 2 | 6 | 1 | | 2 | 3 | | | | | | | |
| | 6 | 2 | 6 | | | | V Pecci | 2 | 4 | | | | |
| J Pinto Bravo | 6 | 1 | | | | | M Orantes | 6 | 6 | | | | |
| P Szőke | 7 | 6 | | P Szőke | 4 | 2 | | | | | | | |
| R Aubone | 2 | 0 | | M Orantes | 6 | 6 | | | | | | | |
| M Orantes | 6 | 6 | | | | | | | | | | | |
