| Event | Heat | Status | |
|---|---|---|---|
| Men 400 Meter Hurdles 17-18 years old (Prelims) | 9|10 | ||
| Monday |
| Record | Athlete | Date | ||
|---|---|---|---|---|
| JO Games | Robert Griffin III - Copperas Cove | 49.56 | 8/1/2007 | |
| National | Robert Griffin III - Copperas Cove | 49.56 | 2007 |
| Pl | Ln | Athlete | Time | |
|---|---|---|---|---|
| 1 | 6 | Miles CASH Run U Xpress |
53.70 | |
| 2 | 4 | Brooklyn GUZMAN IM Better Than That Inc |
54.43 | |
| 3 | 3 | Dominic DELUCA Run U Xpress |
55.53 | |
| 4 | 5 | Joshua WATKINS-JOHNSON Michigan Accelerators Track |
56.21 | |
| 5 | 1 | Gavin HACKETT-KEMP New Life Gliders |
57.94 | |
| 6 | 7 | Mekhai MARTIN Top Self Training |
58.48 | |
| 7 | 8 | Jerome WILLIAMS Gadsden Burners |
58.66 | |
| 8 | 2 | Rocky MARQUEZ JR. Unattached |
1:03.57 |