| W | World | 43.18 | Michael Johnson | USA | 8/26/1999 | Seville, ESP |
| U | American | 43.18 | Michael Johnson | Nike | 8/26/1999 | |
| C | College Outdoor | 44.00 | Quincy Watts | So. California | 6/6/1992 | Austin, TX |
| I | IC4A | 49.20 | ||||
| N | NEC championship | 45.91 | Richard James | Long Island | 2003 |
| Athlete | Yr. | Team | Seed | |
|---|---|---|---|---|
| 1 | OTUN, KAZEEM | SR | FAIRLEIGH DICKINSON | 48.15 |
| 2 | RASIN, QUINCY | JR | WAGNER | 48.39 |
| 3 | BUNION, DESHAWN | SO | LIU BROOKLYN | 48.44 |
| 4 | HENDERSON, KWESI | FR | LIU BROOKLYN | 48.87 |
| 5 | JONES, LOGAN | SO | LIU BROOKLYN | 49.10 |
| 6 | POOLE, JOSHUA | SR | MOUNT ST. MARY'S | 49.15 |
| 7 | ANDREWS, ZACH | SR | CENTRAL CONNECTICUT | 49.19 |
| 8 | MEYER, DANIEL | JR | SAINT FRANCIS (PA.) | 49.20 |
| 9 | PIERRE, SEBASTIAN | JR | SACRED HEART | 49.55 |
| 10 | MOORE, GARVEY | SR | LIU BROOKLYN | 49.61 |
| 11 | ALTLAND, BRADY | JR | MOUNT ST. MARY'S | 49.74 |
| 12 | PATTERSON, JUSTIN | JR | BRYANT | 50.09 |
| 13 | TWUMASI-ANKRAH, BRENDEN | JR | SACRED HEART | 50.47 |
| 14 | WILLIAMS, MYLES | SR | FAIRLEIGH DICKINSON | 50.48 |
| 15 | BINETTE, ALEC | SO | BRYANT | 50.60 |
| 16 | MURRAY, BRIAN | FR | BRYANT | 50.82 |
| 17 | GILLESPIE, LAMAR | SR | ST. FRANCIS (N.Y.) | 50.83 |
| 18 | COLIN, RICHARD | JR | FAIRLEIGH DICKINSON | 51.03 |
| 19 | HUMM, ANDREW | SO | MOUNT ST. MARY'S | 51.30 |
| 20 | LECKENBY, KEITH | FR | SAINT FRANCIS (PA.) | 51.31 |
| 21 | GILLESPIE, LUTHER | SR | ST. FRANCIS (N.Y.) | 51.57 |
| 22 | SNIPES, TRENTON | FR | MOUNT ST. MARY'S | 51.88 |
| 23 | EDWARDS, MARCUS | JR | SAINT FRANCIS (PA.) | 51.98 |
| 24 | HOLLIS, COLE | FR | BRYANT | 53.08 |
| Athlete | Yr. | Team | Seed | |
|---|---|---|---|---|
| 1 | OTUN, KAZEEM | SR | FAIRLEIGH DICKINSON | 48.15 |
| 2 | RASIN, QUINCY | JR | WAGNER | 48.39 |
| 3 | BUNION, DESHAWN | SO | LIU BROOKLYN | 48.44 |
| 4 | HENDERSON, KWESI | FR | LIU BROOKLYN | 48.87 |
| 5 | JONES, LOGAN | SO | LIU BROOKLYN | 49.10 |
| 6 | POOLE, JOSHUA | SR | MOUNT ST. MARY'S | 49.15 |
| 7 | ANDREWS, ZACH | SR | CENTRAL CONNECTICUT | 49.19 |
| 8 | MEYER, DANIEL | JR | SAINT FRANCIS (PA.) | 49.20 |
| 9 | PIERRE, SEBASTIAN | JR | SACRED HEART | 49.55 |
| 10 | MOORE, GARVEY | SR | LIU BROOKLYN | 49.61 |
| 11 | ALTLAND, BRADY | JR | MOUNT ST. MARY'S | 49.74 |
| 12 | PATTERSON, JUSTIN | JR | BRYANT | 50.09 |
| 13 | TWUMASI-ANKRAH, BRENDEN | JR | SACRED HEART | 50.47 |
| 14 | WILLIAMS, MYLES | SR | FAIRLEIGH DICKINSON | 50.48 |
| 15 | BINETTE, ALEC | SO | BRYANT | 50.60 |
| 16 | MURRAY, BRIAN | FR | BRYANT | 50.82 |
| 17 | GILLESPIE, LAMAR | SR | ST. FRANCIS (N.Y.) | 50.83 |
| 18 | COLIN, RICHARD | JR | FAIRLEIGH DICKINSON | 51.03 |
| 19 | HUMM, ANDREW | SO | MOUNT ST. MARY'S | 51.30 |
| 20 | LECKENBY, KEITH | FR | SAINT FRANCIS (PA.) | 51.31 |
| 21 | GILLESPIE, LUTHER | SR | ST. FRANCIS (N.Y.) | 51.57 |
| 22 | SNIPES, TRENTON | FR | MOUNT ST. MARY'S | 51.88 |
| 23 | EDWARDS, MARCUS | JR | SAINT FRANCIS (PA.) | 51.98 |
| 24 | HOLLIS, COLE | FR | BRYANT | 53.08 |