2007 World Championships in Athletics – Men's 400 metres
# 2007 World Championships in Athletics – Men's 400 metres

The men's 400 metres at the 2007 World Championships in Athletics was held at the Nagai Stadium on 28, 29 and 31 August.

## Medalists

| Gold | Silver | Bronze |
| - | - | - |
| Jeremy Wariner United States | LaShawn Merritt United States | Angelo Taylor United States |

## Records

Prior to the competition, the established records were as follows.

| World record | Michael Johnson (USA) | 43.18 | Seville, Spain | 26 August 1999 |
| - | - | - | - | - |
| Championship record | Michael Johnson (USA) | 43.18 | Seville, Spain | 26 August 1999 |
| World Leading | Jeremy Wariner (USA) | 43.50 | Stockholm, Sweden | 7 August 2007 |
| African record | Gary Kikaya (COD) | 44.10 | Stuttgart, Germany | 9 September 2006 |
| Asian record | Mohamed Amer Al-Malky (OMA) | 44.56 | Budapest, Hungary | 12 August 1988 |
| North American record | Michael Johnson (USA) | 43.18 | Seville, Spain | 26 August 1999 |
| South American record | Sanderlei Parrela (BRA) | 44.29 | Seville, Spain | 26 August 1999 |
| European record | Thomas Schönlebe (GDR) | 44.33 | Rome, Italy | 3 September 1987 |
| Oceanian record | Darren Clark (AUS) | 44.38 | Seoul, South Korea | 26 September 1988 |

## Schedule

| Date | Time | Round |
| - | - | - |
| August 28, 2007 | 10:10 | Heats |
| August 29, 2007 | 21:25 | Semifinals |
| August 31, 2007 | 22:05 | Final |

## Results

| KEY: | q | Fastest non-qualifiers | Q | Qualified | WR | World record | AR | Area record | NR | National record | PB | Personal best | SB | Seasonal best |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |

### Heats

Qualification: First 3 in each heat (Q) and the next 3 fastest (q) advance to the semifinals.

| Rank | Heat | Name | Nationality | Time | Notes |
| - | - | - | - | - | - |
| 1 | 1 | Chris Brown | Bahamas | 44.50 | Q, SB |
| 2 | 4 | LaShawn Merritt | United States | 44.78 | Q |
| 3 | 1 | John Steffensen | Australia | 44.82 | Q, SB |
| 4 | 1 | Arismendy Peguero | Dominican Republic | 44.92 | Q, PB |
| 5 | 4 | Johan Wissman | Sweden | 44.94 | Q, NR |
| 6 | 3 | Alleyne Francique | Grenada | 44.95 | Q, SB |
| 7 | 6 | Nery Brenes | Costa Rica | 45.01 | Q, NR |
| 8 | 2 | Jeremy Wariner | United States | 45.10 | Q |
| 9 | 6 | Angelo Taylor | United States | 45.13 | Q |
| 10 | 7 | Tyler Christopher | Canada | 45.15 | Q |
| 11 | 3 | Leslie Djhone | France | 45.17 | Q |
| 12 | 5 | Gary Kikaya | Democratic Republic of the Congo | 45.21 | Q |
| 13 | 7 | Ato Modibo | Trinidad and Tobago | 45.22 | Q, SB |
| 14 | 2 | Avard Moncur | Bahamas | 45.27 | Q |
| 15 | 5 | Sanjay Ayre | Jamaica | 45.28 | Q |
| 16 | 6 | William Collazo | Cuba | 45.29 | Q, PB |
| 17 | 4 | Andrae Williams | Bahamas | 45.31 | Q |
| 18 | 3 | Ricardo Chambers | Jamaica | 45.34 | Q |
| 19 | 2 | David Gillick | Ireland | 45.35 | Q |
| 20 | 6 | California Molefe | Botswana | 45.36 | q, SB |
| 21 | 7 | Sean Wroe | Australia | 45.39 | Q |
| 22 | 4 | Young Talkmore Nyongani | Zimbabwe | 45.40 | q, SB |
| 23 | 5 | Timothy Benjamin | Great Britain | 45.44 | Q |
| 23 | 6 | Michael Blackwood | Jamaica | 45.44 | q |
| 23 | 1 | Bastian Swillims | Germany | 45.44 | PB |
| 26 | 5 | Chris Lloyd | Dominica | 45.46 | |
| 27 | 2 | Martyn Rooney | Great Britain | 45.47 | SB |
| 28 | 2 | Lewis Banda | Zimbabwe | 45.47 | SB |
| 29 | 7 | Daniel Dąbrowski | Poland | 45.50 | |
| 30 | 3 | Andrew Steele | Great Britain | 45.54 | |
| 31 | 5 | Vladislav Frolov | Russia | 45.69 | |
| 32 | 1 | Renny Quow | Trinidad and Tobago | 45.70 | |
| 33 | 7 | Andrea Barberi | Italy | 45.74 | SB |
| 34 | 1 | Marcin Marciniszyn | Poland | 45.83 | |
| 35 | 3 | Rafał Wieruszewski | Poland | 45.94 | SB |
| 36 | 3 | Carlos Santa | Dominican Republic | 45.99 | SB |
| 37 | 2 | Brice Panel | France | 46.02 | |
| 38 | 3 | Clemens Zeller | Austria | 46.06 | |
| 39 | 1 | Dimitrios Regas | Greece | 46.22 | SB |
| 40 | 6 | Yuki Yamaguchi | Japan | 46.28 | |
| 41 | 4 | Eric Milazar | Mauritius | 46.55 | |
| 42 | 5 | Ioan Vieru | Romania | 46.78 | |
| 43 | 4 | Andrés Silva | Uruguay | 46.79 | |
| 44 | 2 | Félix Martínez | Puerto Rico | 46.86 | |
| 45 | 1 | Takeshi Fujiwara | El Salvador | 46.92 | NR |
| 46 | 7 | Dimitrios Gravalos | Greece | 46.94 | |
| 47 | 5 | Mathieu Gnanligo | Benin | 47.51 | |
| 48 | 6 | Jonathon Lavers | Gibraltar | 47.97 | NR |
| 49 | 6 | Ivano Bucci | San Marino | 48.07 | PB |
| 50 | 5 | Nicolau Palanca | Angola | 48.60 | |
| 51 | 4 | Dalibor Spasovski | Macedonia | 48.63 | PB |
| 52 | 7 | Moses Kamut | Vanuatu | 48.90 | |
| 53 | 4 | Karar A.M. Al Abbody | Iraq | 48.95 | PB |
| 54 | 2 | Abdulla Mohamed Hussein | Somalia | 50.54 | PB |
| 55 | 2 | Hermán López | Nicaragua | 50.72 | |
| | 3 | Yuzo Kanemaru | Japan | | DNF |
| | 6 | Nagmeldin Ali Abubakr | Sudan | | DNF |
| | 7 | Lionel Larry | United States | | DNF |
| | 4 | Gakologelwang Masheto | Botswana | | DNS |
| | 5 | Hamdan Al-Bishi | Saudi Arabia | | DNS |

### Semifinals

First 2 in each semifinal (Q) and the next 2 fastest (q) advance to the final.

| Rank | Heat | Name | Nationality | Time | Notes |
| - | - | - | - | - | - |
| 1 | 3 | LaShawn Merritt | United States | 44.31 | Q |
| 2 | 2 | Jeremy Wariner | United States | 44.33 | Q |
| 3 | 1 | Angelo Taylor | United States | 44.45 | Q |
| 4 | 3 | Leslie Djhone | France | 44.46 | Q, NR |
| 5 | 3 | Tyler Christopher | Canada | 44.47 | q, SB |
| 6 | 2 | Chris Brown | Bahamas | 44.50 | Q |
| 7 | 1 | Johan Wissman | Sweden | 44.56 | Q, NR |
| 8 | 1 | Avard Moncur | Bahamas | 44.86 | q, SB |
| 9 | 3 | John Steffensen | Australia | 44.95 | |
| 10 | 2 | Ato Modibo | Trinidad and Tobago | 45.12 | SB |
| 11 | 1 | Nery Brenes | Costa Rica | 45.14 | |
| 11 | 2 | Gary Kikaya | Democratic Republic of the Congo | 45.14 | |
| 13 | 2 | Ricardo Chambers | Jamaica | 45.18 | |
| 14 | 1 | Sean Wroe | Australia | 45.25 | PB |
| 15 | 2 | David Gillick | Ireland | 45.37 | |
| 16 | 3 | Andrae Williams | Bahamas | 45.40 | |
| 17 | 1 | Alleyne Francique | Grenada | 45.41 | |
| 18 | 2 | California Molefe | Botswana | 45.47 | |
| 19 | 1 | Arismendy Peguero | Dominican Republic | 45.54 | |
| 19 | 2 | William Collazo | Cuba | 45.54 | |
| 21 | 1 | Michael Blackwood | Jamaica | 45.60 | |
| 22 | 3 | Timothy Benjamin | Great Britain | 46.17 | |
| 23 | 3 | Young Talkmore Nyongani | Zimbabwe | 46.23 | |
| | 3 | Sanjay Ayre | Jamaica | | DNF |

### Final

| Rank | Name | Nationality | Time | Notes |
| - | - | - | - | - |
| | Jeremy Wariner | United States | 43.45 | WL |
| | LaShawn Merritt | United States | 43.96 | PB |
| | Angelo Taylor | United States | 44.32 | |
| 4 | Chris Brown | Bahamas | 44.45 | NR |
| 5 | Leslie Djhone | France | 44.59 | |
| 6 | Tyler Christopher | Canada | 44.71 | |
| 7 | Johan Wissman | Sweden | 44.72 | |
| 8 | Avard Moncur | Bahamas | 45.40 | |
