# 2017 World Championships in Athletics – Men's 400 metres hurdles

The men's 400 metres hurdles at the 2017 World Championships in Athletics was held at the London Olympic Stadium on 6–9 August.

## Summary

Karsten Warholm led the final from start to finish. At the final hurdle, Abderrahman Samba, in second place and seemingly gaining on Warholm, stumbled and struggled to maintain his balance, dropping to seventh. From the last hurdle to the finish line Warholm increased his speed again, winning by a comfortable margin, while Yasmani Copello overtook Kerron Clement on the final run in to gain silver.

## Records

Before the competition records were as follows:
| Record | Perf. | Athlete | Nat. | Date | Location |
| World | 46.78 | Kevin Young | USA | 6 Aug 1992 | Barcelona, Spain |
| Championship | 47.18 | Kevin Young | USA | 19 Aug 1993 | Stuttgart, Germany |
| World leading | 47.80 | Kyron McMaster | IVB | 20 May 2017 | Kingston, Jamaica |
| African | 47.10 | Samuel Matete | ZAM | 7 Aug 1991 | Zürich, Switzerland |
| Asian | 47.53 | Hadi Soua'an Al-Somaily | KSA | 27 Sep 2000 | Sydney, Australia |
| NACAC | 46.78 | Kevin Young | USA | 6 Aug 1992 | Barcelona, Spain |
| South American | 47.84 | Bayano Kamani | PAN | 7 Aug 2005 | Helsinki, Finland |
| European | 47.37 | Stéphane Diagana | FRA | 5 Jul 1995 | Lausanne, Switzerland |
| Oceanian | 48.28 | Rohan Robinson | AUS | 31 Jul 1996 | Atlanta, United States |
The following records were set at the competition:
| Record | Perf. | Athlete | Nat. | Date |
| Argentine | 49.69 | Guillermo Ruggeri | ARG | 6 Aug 2017 |

## Qualification standard

The standard to qualify automatically for entry was 49.35.

## Schedule

The event schedule, in local time (UTC+1), is as follows:
| Date | Time | Round |
| 6 August | 11:05 | Heats |
| 7 August | 20:20 | Semifinals |
| 9 August | 21:33 | Final |

## Results
### Heats

The first round took place on 6 August in five heats as follows:
| Heat | 1 | 2 | 3 | 4 | 5 |
| Start time | 11:05 | 11:13 | 11:22 | 11:31 | 11:41 |
| Photo finish | link | link | link | link | link |
The first four in each heat ( Q ) and the next four fastest ( q ) qualified for the semifinals. The overall results were as follows:
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 3 | 8 | Yasmani Copello | Turkey (TUR) | 49.13 | Q |
| 2 | 4 | 9 | Juander Santos | Dominican Republic (DOM) | 49.19 | Q |
| 3 | 5 | 2 | Mamadou Kassé Hanne | France (FRA) | 49.34 | Q |
| 4 | 2 | 4 | TJ Holmes | United States (USA) | 49.35 | Q |
| 5 | 3 | 9 | Abderrahman Samba | Qatar (QAT) | 49.39 | Q |
| 6 | 5 | 7 | Márcio Teles | Brazil (BRA) | 49.41 | Q |
| 7 | 5 | 4 | Patryk Dobek | Poland (POL) | 49.42 | Q |
| 8 | 1 | 5 | Kerron Clement | United States (USA) | 49.46 | Q |
| 9 | 3 | 4 | Ludvy Vaillant | France (FRA) | 49.49 | Q |
| 10 | 4 | 4 | Karsten Warholm | Norway (NOR) | 49.50 | Q |
| 11 | 5 | 5 | Aron Koech | Kenya (KEN) | 49.55 | Q |
| 12 | 5 | 3 | Jack Green | Great Britain & N.I. (GBR) | 49.55 | q |
| 13 | 5 | 8 | Eric Futch | United States (USA) | 49.57 | q |
| 14 | 1 | 3 | Takatoshi Abe | Japan (JPN) | 49.65 | Q |
| 15 | 4 | 3 | Guillermo Ruggeri | Argentina (ARG) | 49.69 | Q, NR |
| 16 | 2 | 9 | Jaheel Hyde | Jamaica (JAM) | 49.72 | Q |
| 17 | 2 | 5 | Abdelmalik Lahoulou | Algeria (ALG) | 49.78 | Q |
| 18 | 2 | 6 | Thomas Barr | Ireland (IRL) | 49.79 | Q |
| 19 | 3 | 2 | José Reynaldo Bencosme de Leon | Italy (ITA) | 49.79 | Q |
| 20 | 1 | 6 | Jaak-Heinrich Jagor | Estonia (EST) | 49.81 | Q |
| 21 | 4 | 7 | Ricardo Cunningham | Jamaica (JAM) | 49.91 | Q |
| 22 | 1 | 8 | Kemar Mowatt | Jamaica (JAM) | 50.00 | Q |
| 23 | 4 | 5 | Victor Coroller | France (FRA) | 50.00 | q |
| 24 | 3 | 7 | Kariem Hussein | Switzerland (SUI) | 50.12 | q |
| 25 | 1 | 4 | Hederson Estefani | Brazil (BRA) | 50.22 | |
| 26 | 3 | 5 | Jordin Andrade | Cape Verde (CPV) | 50.32 | |
| 27 | 1 | 2 | Javier Culson | Puerto Rico (PUR) | 50.33 | |
| 28 | 2 | 3 | Yusuke Ishida | Japan (JPN) | 50.35 | |
| 29 | 2 | 2 | Lorenzo Vergani | Italy (ITA) | 50.37 | |
| 30 | 5 | 9 | Sergio Fernández | Spain (ESP) | 50.38 | |
| 31 | 4 | 6 | Ryo Kajiki | Japan (JPN) | 51.36 | |
| 32 | 3 | 6 | Creve Armando Machava | Mozambique (MOZ) | 51.71 | |
| 33 | 1 | 7 | José Luis Gaspar | Cuba (CUB) | 51.82 | |
| 34 | 5 | 6 | Mehboob Ali | Pakistan (PAK) | 52.24 | |
| 35 | 2 | 7 | Ephraim Lerkin | Papua New Guinea (PNG) | 52.36 | |
| 36 | 1 | 9 | Pablo Andrés Ibáñez | El Salvador (ESA) | 52.72 | |
| | 4 | 2 | Michael Stigler | United States (USA) | DQ | R 168.7(a) |
| | 2 | 8 | Kyron McMaster | British Virgin Islands (IVB) | DQ | R 163.3(a) |
| | 4 | 8 | Eric Cray | Philippines (PHI) | DQ | R 162.7 |
| | 3 | 3 | Rasmus Mägi | Estonia (EST) | DNS | |

### Semifinals

The semifinals took place on 7 August in three heats as follows:
| Heat | 1 | 2 | 3 |
| Start time | 20:20 | 20:30 | 20:40 |
| Photo finish | link | link | link |
The first two in each heat ( Q ) and the next two fastest ( q ) qualified for the final. The overall results were as follows:
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 1 | 7 | Kerron Clement | United States (USA) | 48.35 | Q |
| 2 | 1 | 5 | Karsten Warholm | Norway (NOR) | 48.43 | Q |
| 3 | 1 | 4 | Juander Santos | Dominican Republic (DOM) | 48.59 | q, PB |
| 4 | 1 | 3 | Kemar Mowatt | Jamaica (JAM) | 48.66 | q |
| 5 | 3 | 6 | Abderrahman Samba | Qatar (QAT) | 48.75 | Q |
| 6 | 3 | 4 | Yasmani Copello | Turkey (TUR) | 48.91 | Q |
| 7 | 2 | 6 | TJ Holmes | United States (USA) | 49.12 | Q |
| 8 | 2 | 2 | Kariem Hussein | Switzerland (SUI) | 49.13 | Q |
| 9 | 3 | 2 | Eric Futch | United States (USA) | 49.30 | |
| 10 | 1 | 8 | Abdelmalik Lahoulou | Algeria (ALG) | 49.33 | |
| 11 | 1 | 6 | Patryk Dobek | Poland (POL) | 49.40 | |
| 12 | 2 | 7 | Jaheel Hyde | Jamaica (JAM) | 49.75 | |
| 13 | 2 | 3 | Jack Green | Great Britain & N.I. (GBR) | 49.93 | |
| 14 | 2 | 4 | Takatoshi Abe | Japan (JPN) | 49.93 | |
| 15 | 3 | 5 | Ludvy Vaillant | France (FRA) | 49.95 | |
| 16 | 3 | 8 | José Reynaldo Bencosme de Leon | Italy (ITA) | 50.29 | |
| 17 | 2 | 5 | Mamadou Kassé Hanne | France (FRA) | 50.35 | |
| 18 | 2 | 9 | Aron Kipchumba Koech | Kenya (KEN) | 50.40 | |
| 19 | 2 | 8 | Jaak-Heinrich Jagor | Estonia (EST) | 50.43 | |
| 20 | 3 | 3 | Ricardo Cunningham | Jamaica (JAM) | 50.54 | |
| 21 | 1 | 2 | Victor Coroller | France (FRA) | 55.69 | |
| | 3 | 7 | Márcio Teles | Brazil (BRA) | DNF | |
| | 3 | 9 | Guillermo Ruggeri | Argentina (ARG) | DQ | R 163.3(a) |
| | 1 | 9 | Thomas Barr | Ireland (IRL) | DNS | |

### Final

The final took place on 9 August at 20:34. The results were as follows (photo finish):
| Rank | Lane | Name | Nationality | Time |
| | 5 | Karsten Warholm | Norway (NOR) | 48.35 |
| | 8 | Yasmani Copello | Turkey (TUR) | 48.49 |
| | 4 | Kerron Clement | United States (USA) | 48.52 |
| 4 | 3 | Kemar Mowatt | Jamaica (JAM) | 48.99 |
| 5 | 7 | TJ Holmes | United States (USA) | 49.00 |
| 6 | 2 | Juander Santos | Dominican Republic (DOM) | 49.04 |
| 7 | 6 | Abderrahman Samba | Qatar (QAT) | 49.74 |
| 8 | 9 | Kariem Hussein | Switzerland (SUI) | 50.07 |