2005 World Championships in Athletics – Men's 400 metres

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The men's 400 metres at the 2005 World Championships in Athletics was held on August 9, 10 and 12 at the Helsinki Olympic Stadium. The winning margin was 0.42 seconds.

Medalists

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bgcolor="gold"|Gold{{flagicon|USA}} Jeremy Wariner
United States (USA)
bgcolor="silver"|Silver{{flagicon|USA}} Andrew Rock
United States (USA)
bgcolor="CC9966"|Bronze{{flagicon|CAN}} Tyler Christopher
Canada (CAN)

Results

All times shown are in seconds.

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=Heats=

August 9, 2005

==Heat 1==

  1. {{flagicon|Great Britain}} Timothy Benjamin 44.85 Q
  2. {{flagicon|Jamaica}} Brandon Simpson 44.98 Q
  3. {{flagicon|Nigeria}} James Godday 45.30 q (PB)
  4. {{flagicon|Botswana}} California Molefe 45.34 q (NR)
  5. {{flagicon|Switzerland}} Pierre Lavanchy 45.79 q
  6. {{flagicon|Croatia}} Željko Vincek 46.03
  7. {{flagicon|Jordan}} Abdesalem Khalifeh Bajes Al-Hajjaj 48.89
  8. {{flagicon|Monaco}} Florent Battistel 50.54

==Heat 2==

  1. {{flagicon|United States}} Jeremy Wariner 45.24 Q
  2. {{flagicon|Great Britain}} Robert Tobin 45.41 Q
  3. {{flagicon|Zimbabwe}} Young Talkmore Nyongani 45.55 q
  4. {{flagicon|Saudi Arabia}} Hamdan Odha Al-Bishi 45.88 q
  5. {{flagicon|Belgium}} Cedric van Branteghem 46.42
  6. {{flagicon|Mexico}} Alejandro Cárdenas 46.73 (SB)
  7. {{flagicon|PYF}} Isaac Yaya 47.75

==Heat 3==

  1. {{flagicon|Australia}} John Steffensen 45.62 Q
  2. {{flagicon|Canada}} Tyler Christopher 45.66 Q
  3. {{flagicon|DOM}} Arismendy Peguero 45.80 q (SB)
  4. {{flagicon|Mauritius}} Eric Milazar 45.91
  5. {{flagicon|Bahamas}} Andrae Williams 46.49
  6. {{flagicon|Germany}} Simon Kirch 47.45
  7. {{flagicon|Yemen}} Saeed Al-Adhreai 49.74

==Heat 4==

  1. {{flagicon|United States}} Andrew Rock 44.98 Q
  2. {{flagicon|Bahamas}} Chris Brown 45.20 Q
  3. {{flagicon|Italy}} Andrea Barberi 45.70 q (PB)
  4. {{flagicon|Tunisia}} Sofiane Labidi 45.71 q
  5. {{flagicon|Japan}} Mitsuhiro Sato 45.78 q (SB)
  6. {{flagicon|Brazil}} Anderson Jorge dos Santos 46.32
  7. {{flagicon|TPE}} Chung Cheng-Kang 47.85 (PB)
  8. {{flagicon|San Marino}} Glauco Martini 51.48

==Heat 5==

  1. {{flagicon|Jamaica}} Michael Blackwood 45.58 Q
  2. {{flagicon|DOM}} Carlos Santa 45.63 Q
  3. {{flagicon|Grenada}} Alleyne Francique 45.77 q
  4. {{flagicon|Poland}} Marcin Marciniszyn 45.97
  5. {{flagicon|TTO}} Damion Barry 46.20
  6. {{flagicon|Costa Rica}} Nery Brenes 47.11
  7. {{flagicon|Azerbaijan}} Ibrahim Ahmadov 48.51

==Heat 6==

  1. {{flagicon|Democratic Republic of the Congo|1997}} Gary Kikaya 45.88 Q
  2. {{flagicon|Jamaica}} Lanceford Spence 46.21 Q
  3. {{flagicon|South Africa}} Ofentse Mogawane 46.80
  4. {{flagicon|Barbados}} Wilan Louis 46.93
  5. {{flagicon|Sri Lanka}} Prasanna Sampath Amarasekara 47.11
  6. {{flagicon|SOL}} Chris Meke Walasi 49.47

==Heat 7==

  1. {{flagicon|United States}} Darold Williamson 45.97 Q
  2. {{flagicon|Sudan}} Nagmeldin Ali Abubakr 46.02 Q
  3. {{flagicon|Great Britain}} Malachi Davis 46.14
  4. {{flagicon|TTO}} Ato Modibo 46.28
  5. {{flagicon|France}} Leslie Djhone 46.57
  6. {{flagicon|Dominica}} Chris Lloyd 47.13
  7. {{flagicon|Vanuatu}} Moses Kamut 48.63

=Semi-finals=

August 10, 2005

==Heat 1==

  1. {{flagicon|Jamaica}} Brandon Simpson 45.53 Q
  2. {{flagicon|United States}} Andrew Rock 45.78 Q
  3. {{flagicon|Australia}} John Steffensen 46.06 q
  4. {{flagicon|DOM}} Carlos Santa 46.07
  5. {{flagicon|Grenada}} Alleyne Francique 46.59
  6. {{flagicon|Nigeria}} James Godday 46.62
  7. {{flagicon|Saudi Arabia}} Hamdan Odha Al-Bishi 46.80
  8. {{flagicon|Italy}} Andrea Barberi 47.10

==Heat 2==

  1. {{flagicon|Canada}} Tyler Christopher 45.47 Q
  2. {{flagicon|United States}} Darold Williamson 45.65 Q
  3. {{flagicon|Great Britain}} Timothy Benjamin 45.66 q
  4. {{flagicon|DOM}} Arismendy Peguero 46.08
  5. {{flagicon|Democratic Republic of the Congo|1997}} Gary Kikaya 46.15
  6. {{flagicon|Sudan}} Nagmeldin Ali Abubakr 46.67
  7. {{flagicon|Jamaica}} Lanceford Spence 47.20

==Heat 3==

  1. {{flagicon|United States}} Jeremy Wariner 45.65 Q
  2. {{flagicon|Bahamas}} Chris Brown 45.67 Q
  3. {{flagicon|Jamaica}} Michael Blackwood 46.25
  4. {{flagicon|Great Britain}} Robert Tobin 46.69
  5. {{flagicon|Switzerland}} Pierre Lavanchy 47.19
  6. {{flagicon|Zimbabwe}} Young Talkmore Nyongani 47.20
  7. {{flagicon|Botswana}} California Molefe 47.26
  8. {{flagicon|Japan}} Mitsuhiro Sato 48.55

=Final=

August 12, 2005

  1. {{flagicon|United States}} Jeremy Wariner 43.93 (WL)
  2. {{flagicon|United States}} Andrew Rock 44.35 (PB)
  3. {{flagicon|Canada}} Tyler Christopher 44.44 (NR)
  4. {{flagicon|Bahamas}} Chris Brown 44.48 (PB)
  5. {{flagicon|Great Britain}} Timothy Benjamin 44.93
  6. {{flagicon|Jamaica}} Brandon Simpson 45.01
  7. {{flagicon|United States}} Darold Williamson 45.12
  8. {{flagicon|Australia}} John Steffensen 45.46