| <- Back to Day 4 Results | Start List | View Splits |
| Men's 400 Meter Dash | Final |
|---|
| Event Records |
|---|
| Record | Tag | Time | Athlete | Affiliation | Date |
|---|---|---|---|---|---|
| World | W | 43.18 | Michael Johnson | USA | August 26 1999 |
| American | A | 43.18 | Michael Johnson | Nike | August 26 1999 |
| Meet | M | 43.44 | Michael Johnson | Nike | June 19 1996 |
| OG A | 45.30 |
|
Advance 16 -- Top 3 + 4 on time to semis Advance top 4 in each semi to final |
| Place | Athlete Name | Affiliation | Time | ReacTime | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | LaShawn Merritt | Nike | 44.12 | 0.264 | |||||||
| 2 | Tony McQuay | Florida | 44.49 | 0.206 | |||||||
| 3 | Bryshon Nellum | U S C | 44.80 | 0.225 | |||||||
| 4 | Josh Mance | Unattached | 44.88 | 0.190 | |||||||
| 5 | Manteo Mitchell | Unattached | 44.96 | 0.191 | |||||||
| 6 | Jeremy Wariner | adidas | 45.24 | 0.231 | |||||||
| 7 | David Verburg | George Mason University | 45.36 | 0.230 | |||||||
| 8 | Brady Gehret | Penn State | 45.48 | 0.219 | |||||||