Top finisher per heat, + next fastest times advance to finals.
| Lane | Athlete | Yr. | Team | Seed |
|---|---|---|---|---|
| 1 | HAGER, Phillip | SO | Rockledge | 54.49 |
| 2 | ADDERLY, Alvin | SO | Rockledge | 54.03 |
| 3 | MAYES, Jaheim | JR | Rockledge | 53.18 |
| 4 | BRECKENRIDGE, Donovan | SR | Titusville | 52.88 |
| 5 | JONES, Isaiah | SR | Cocoa | 53.03 |
| 6 | GARDNER, Triston | SO | Fort Pierce Westwood | 53.50 |
| 7 | BOWENS, Calvin | FR | Lincoln Park | 54.32 |
| 8 | WATERS, Jacen | SO | Rockledge | 54.87 |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | COLE, Khailil | JR | Space Coast | 1:02.38 | 1:02.38 Holy Trinity Invitational (3/02/2019) |
| 2 | FARRELL, Dylin | FR | Titusville | 57.29 | 57.29 Satellite High Invitational (2/22/2019) |
| 3 | GARDNER, James | SO | Fort Pierce Westwood | 55.74 | 55.74 Bill Wilson Invitational (3/09/2019) |
| 4 | BRECKENRIDGE, Donovan | SR | Titusville | 49.53 | 49.53 Cape Coast Conference Championship (4/04/2019) |
| 5 | BLACK, Dylan | SR | Edgewood | 55.21 | 55.21 Astronaut developmental meet #2 (3/08/2019) |
| 6 | GREENE, Curtis | JR | Lincoln Park | 57.12 | 57.12 Satellite High Reggie Johnson Memorial Classic 2019 (3/15/2019) |
| 7 | SANCHEZ, Declan | SR | Space Coast | 1:01.52 | 1:01.52 Satellite High Reggie Johnson Memorial Classic 2019 (3/15/2019) |
| 8 | STANBERRY, Ravon | SO | Fort Pierce Westwood | NT |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | OLIVER, Austin | JR | Satellite | 1:03.43 | 1:03.43 Cape Coast Conference Championship (4/04/2019) |
| 2 | QUIROZ, Emilio | JR | Melbourne Central Catholic | 57.62 | 57.62 Melbourne Central Catholic Invitational (3/29/2019) |
| 3 | EDGECOMBE, Jaden | 8 | Cocoa | 55.80 | 55.80 Astronaut Invitational 2019 (3/29/2019) |
| 4 | MAYES, Jaheim | JR | Rockledge | 51.83 | 51.83 Astronaut Invitational 2019 (3/29/2019) |
| 5 | HAGER, Phillip | SO | Rockledge | 54.77 | 54.77 Cape Coast Conference Championship (4/04/2019) |
| 6 | GREEN, Quemari | SO | Cocoa | 57.06 | 57.06 Cape Coast Conference Championship (4/04/2019) |
| 7 | DANIELS, Tyreek | FR | Titusville | 59.94 | 59.94 Astronaut Developmental Meet #1 (3/01/2019) |
| 8 | COLLINS, Malik | 8 | Lincoln Park | NT |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | BOSSENBERRY, Gabe | FR | Satellite | 1:04.39 | 1:04.39 Cape Coast Conference Championship (4/04/2019) |
| 2 | CAUSEY, Cody | FR | Astronaut | 57.91 | 57.91 Astronaut Invitational 2019 (3/29/2019) |
| 3 | JONES, Tyler | SR | Astronaut | 56.30 | 56.30 Cape Coast Conference Championship (4/04/2019) |
| 4 | JONES, Isaiah | SR | Cocoa | 52.46 | 52.46 Cape Coast Conference Championship (4/04/2019) |
| 5 | OWENS, Justin | SO | Fort Pierce Westwood | 54.71 | 54.71 Bonita Williams Invitational (4/04/2019) |
| 6 | BOWENS, Calvin | FR | Lincoln Park | 56.81 | 56.81 Walter Jshombach Memorial Invitational (2/15/2019) |
| 7 | OCASIO, Juan | SO | Titusville | 59.55 | 59.55 Astronaut Developmental Meet #1 (3/01/2019) |
| 8 | HOBBS, Alexander | SR | Edgewood | NT |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | FREY, Thomas | FR | Edgewood | NT | |
| 2 | VANDERBURG, Caleb | SR | Satellite | 57.98 | 57.98 Satellite High Reggie Johnson Memorial Classic 2019 (3/15/2019) |
| 3 | BRITO, Jaydyn | JR | Space Coast | 56.56 | 56.56 Melbourne Central Catholic Invitational (3/29/2019) |
| 4 | GARDNER, Triston | SO | Fort Pierce Westwood | 53.09 | 53.09 Bonita Williams Invitational (4/04/2019) |
| 5 | ADDERLY, Alvin | SO | Rockledge | 54.16 | 54.16 Satellite High Reggie Johnson Memorial Classic 2019 (3/15/2019) |
| 6 | WATERS, Jacen | SO | Rockledge | 56.80 | 56.80 Cape Coast Conference Championship (4/04/2019) |
| 7 | CHIOTASSO, Brett | SR | Space Coast | 59.32 | 59.32 Melbourne Central Catholic Invitational (3/29/2019) |
| 8 | BROWN, TyShawn | SO | Cocoa | NT |