400 m, Men
| Competition | 1972 South American Athletics Junior Championships |
|---|---|
| Venue |
Asuncion
 PAR
|
| Held | — |
| Status | Medal |
| Competitors | 4 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Pedro Teixeira |  BRA |
49.8 | ||
| 🥈 | Francisco Bozzo |  CHI |
50.6 | ||
| DQ | Francisco Rojas | PAR |
[50.9] | ||
| 🥉 | Lucio Da Luz | BRA |
51.2 |