100 m, Men
| Competition | 1981 South American Athletics U20 Championships |
|---|---|
| Venue |
Rio de Janeiro
 BRA
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | João Batista da Silva | BRA |
10.5 | ||
| 🥈 | Hugo Alzamora |  ARG |
10.6 | ||
| 🥉 | Enrique Tapia |  CHI |
10.7 |