# 2002 World Junior Championships in Athletics – Men's 400 metres

The men's 400 metres event at the 2002 World Junior Championships in Athletics was held in Kingston, Jamaica, at National Stadium on 16, 17 and 18 July.

## Medalists

| Gold | Darold Williamson United States |
| Silver | Jonathan Fortenberry United States |
| Bronze | Jermaine Gonzales Jamaica |

## Results
### Final

18 July
| Rank | Name | Nationality | Time |
| | Darold Williamson | United States | 45.37 |
| | Jonathan Fortenberry | United States | 45.73 |
| | Jermaine Gonzales | Jamaica | 45.84 |
| 4 | Young Talkmore Nyongani | Zimbabwe | 45.93 |
| 5 | Luís Ambrósio | Brazil | 46.08 |
| 6 | Wilan Louis | Barbados | 46.33 |
| 7 | David McCarthy | Ireland | 47.10 |
| | Piotr Zrada | Poland | DNF |

### Semifinals

17 July

#### Semifinal 1

| Rank | Name | Nationality | Time | Notes |
| 1 | Young Talkmore Nyongani | Zimbabwe | 46.15 | Q |
| 2 | Jermaine Gonzales | Jamaica | 46.17 | Q |
| 3 | Piotr Zrada | Poland | 46.47 | q |
| 4 | David McCarthy | Ireland | 46.77 | q |
| 5 | Luis Luna | Venezuela | 46.93 | |
| 6 | Keith Sheehy | Australia | 47.68 | |
| | Robert Lathouwers | Netherlands | DQ | IAAF rule 163.3 |
| | Mohamed Al-Mowallad | Saudi Arabia | DNF | |

#### Semifinal 2

| Rank | Name | Nationality | Time | Notes |
| 1 | Jonathan Fortenberry | United States | 46.16 | Q |
| 2 | Wilan Louis | Barbados | 46.26 | Q |
| 3 | Florin Suciu | Romania | 47.09 | |
| 4 | Shaine Morrison | South Africa | 47.52 | |
| 5 | Diego Venâncio | Brazil | 47.57 | |
| 6 | Hicham Chliyeh | Morocco | 47.66 | |
| 7 | Kamghe Gaba | Germany | 47.67 | |
| 8 | Ryan Therrien | Canada | 48.58 | |

#### Semifinal 3

| Rank | Name | Nationality | Time | Notes |
| 1 | Darold Williamson | United States | 46.31 | Q |
| 2 | Luís Ambrósio | Brazil | 46.61 | Q |
| 3 | Abdellatif El-Ghazaoui | Morocco | 46.92 | |
| 4 | Brice Panel | France | 47.20 | |
| 5 | Yhann Plummer | Jamaica | 47.55 | |
| 6 | Jacopo Marin | Italy | 47.71 | |
| 7 | Dimítrios Grávalos | Greece | 47.83 | |
| 8 | Courtney McLeod | Australia | 48.24 | |

### Heats

16 July

#### Heat 1

| Rank | Name | Nationality | Time | Notes |
| 1 | Wilan Louis | Barbados | 46.46 | Q |
| 2 | Abdellatif El-Ghazaoui | Morocco | 46.68 | Q |
| 3 | Luís Ambrósio | Brazil | 46.79 | Q |
| 4 | Luis Luna | Venezuela | 46.96 | Q |
| 5 | Yuki Yamaguchi | Japan | 47.74 | |
| 6 | Yohann Negre | France | 48.19 | |
| 7 | Didier Assoumou | Côte d'Ivoire | 49.01 | |
| 8 | Nathan Vadeboncoeur | Canada | 49.32 | |

#### Heat 2

| Rank | Name | Nationality | Time | Notes |
| 1 | Darold Williamson | United States | 46.72 | Q |
| 2 | Kamghe Gaba | Germany | 46.98 | Q |
| 3 | David McCarthy | Ireland | 47.07 | Q |
| 4 | Jacopo Marin | Italy | 47.23 | Q |
| 5 | Mohamed Al-Mowallad | Saudi Arabia | 47.41 | q |
| 6 | Shaine Morrison | South Africa | 47.72 | q |
| 7 | Jamil James | Trinidad and Tobago | 48.62 | |
| | Yosuke Inoue | Japan | DQ | IAAF rule 163.3 |

#### Heat 3

| Rank | Name | Nationality | Time | Notes |
| 1 | Jermaine Gonzales | Jamaica | 46.86 | Q |
| 2 | Brice Panel | France | 47.03 | Q |
| 3 | Florin Suciu | Romania | 47.06 | Q |
| 4 | Dimítrios Grávalos | Greece | 47.62 | Q |
| 5 | Saul Weigopwa | Nigeria | 47.86 | |
| 6 | Andrés Silva | Uruguay | 48.14 | |
| 7 | David Testa | Spain | 48.97 | |
| 8 | Elio Gijon | Mexico | 49.55 | |

#### Heat 4

| Rank | Name | Nationality | Time | Notes |
| 1 | Jonathan Fortenberry | United States | 47.16 | Q |
| 2 | Piotr Zrada | Poland | 47.47 | Q |
| 3 | Courtney McLeod | Australia | 48.11 | Q |
| 4 | Ryan Therrien | Canada | 48.22 | Q |
| 5 | Stefan Wittl | Germany | 48.42 | |
| 6 | John Valoyes | Colombia | 48.46 | |
| 7 | Evans Marie | Seychelles | 48.54 | |
| | Robert Tobin | United Kingdom | DNF | |

#### Heat 5

| Rank | Name | Nationality | Time | Notes |
| 1 | Young Talkmore Nyongani | Zimbabwe | 46.92 | Q |
| 2 | Robert Lathouwers | Netherlands | 47.24 | Q |
| 3 | Diego Venâncio | Brazil | 47.31 | Q |
| 4 | Hicham Chliyeh | Morocco | 47.39 | Q |
| 5 | Keith Sheehy | Australia | 47.42 | q |
| 6 | Yhann Plummer | Jamaica | 47.47 | q |
| 7 | Said Al-Adhreai | Yemen | 49.97 | |
| | Tim Hawkes | New Zealand | DNF | |

## Participation

According to an unofficial count, 40 athletes from 31 countries participated in the event.
* Australia (2)
* Barbados (1)
* Brazil (2)
* Canada (2)
* Colombia (1)
* Côte d'Ivoire (1)
* France (2)
* Germany (2)
* Greece (1)
* Ireland (1)
* Italy (1)
* Jamaica (2)
* Japan (2)
* Mexico (1)
* Morocco (2)
* Netherlands (1)
* New Zealand (1)
* Nigeria (1)
* Poland (1)
* Romania (1)
* Saudi Arabia (1)
* Seychelles (1)
* South Africa (1)
* Spain (1)
* Trinidad and Tobago (1)
* United Kingdom (1)
* United States (2)
* Uruguay (1)
* Venezuela (1)
* Yemen (1)
* Zimbabwe (1)