| Name | Event | Round | Time | Imp | |
|---|---|---|---|---|---|
| 1 | Allan Gutierrez | 50 Y Free | Prelims | 20.39 | +0.5% |
| 2 | Robert Swan | 50 Y Free | Prelims | 20.27 | +0.4% |
| 3 | Diego Gimenez Linares | 50 Y Free | Prelims | 20.79 | +0.3% |
| 4 | Diego Gimenez Linares | 100 Y Free | Prelims | 45.54 | +0.1% |
| 5 | Allan Gutierrez | 100 Y Free | Prelims | 44.58 | +0.8% |
| 6 | Edson Lima | 100 Y Free | Prelims | 45.27 | +2.0% |
| 7 | Luis Rojas | 100 Y Back | Prelims | 48.17 | +2.0% |
| 8 | Thomas Nguyen | 100 Y Back | Prelims | 48.41 | +0.1% |
| 9 | Juan Tolosa | 500 Y Free | Prelims | 4:27.03 | +0.3% |
| 10 | Franco Lupoli | 500 Y Free | Prelims | 4:27.89 | +0.6% |
