| Final 22:05 | Team | time | L | N  |  | 1. Jeremy Wariner |  USA | 43.45s | 6 | 1151 |  | 2. LaShawn Merritt |  USA | 43.96s | 5 | 1120 |  | 3. Angelo Taylor |  USA | 44.32s | 4 | 1141 |  | 4. Chris Brown |  BAH | 44.45s | 8 | 352 |  | 5. Leslie Djhone |  FRA | 44.59s | 7 | 561 |  | 6. Tyler Christopher |  CAN | 44.71s | 3 | 425 |  | 7. Johan Wissman |  SWE | 44.72s | 9 | 1037 |  | 8. Avard Moncur |  BAH | 45.40s | 2 | 351 |   
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| Heat 1 21.25 | Team | time | L | N |  | 1. Angelo Taylor |  USA | 44.45s | 5 | 1141 |  | 2. Johan Wissman |  SWE | 44.56s | 4 | 1037 |  | 3. Avard Moncur |  BAH | 44.86s | 9 | 351 |  | 4. Nery Brenes |  CRC | 45.14s | 6 | 455 |  | 5. Sean Wroe |  AUS | 45.25s | 3 | 329 |  | 6. Alleyne Francique |  GRN | 45.41s | 7 | 658 |  | 7. Arismendy Peguero |  DOM | 45.54s | 8 | 491 |  | 8. Michael Blackwood |  JAM | 45.60s | 2 | 708 |   
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| Heat 2 21.32 | Team | time | L | N |  | 1. Jeremy Wariner |  USA | 44.34s | 7 | 1151 |  | 2. Chris Brown |  BAH | 44.52s | 5 | 352 |  | 3. Ato Modibo |  TRI | 45.12s | 6 | 1049 |  | 4. Gary Kikaya |  COD | 45.14s | 4 | 451 |  | 5. Ricardo Chambers |  JAM | 45.18s | 8 | 713 |  | 6. David Gillick |  IRL | 45.37s | 9 | 684 |  | 7. California Molefe |  BOT | 45.47s | 2 | 380 |  | 8. William Collazo |  CUB | 45.54s | 3 | 459 |   
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| Heat 3 21.39 | Team | time | L | N |  | 1. LaShawn Merritt |  USA | 44.31s | 7 | 1120 |  | 2. Leslie Djhone |  FRA | 44.46s | 6 | 561 |  | 3. Tyler Christopher |  CAN | 44.47s | 5 | 425 |  | 4. John Steffensen |  AUS | 44.95s | 4 | 334 |  | 5. Andrae Williams |  BAH | 45.40s | 8 | 349 |  | 6. Timothy Benjamin |  GBR | 46.17s | 9 | 584 |  | 7. Young Talkmore Nyongani |  ZIM | 46.23s | 2 | 1168 |  | -. Sanjay Ayre |  JAM | DNF | 3 | 706 |   
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| Heat 1 10:10 | Team | time | L | N |  | 1. Chris Brown |  BAH | 44.50s | 5 | 352 |  | 2. John Steffensen |  AUS | 44.82s | 2 | 334 |  | 3. Arismendy Peguero |  DOM | 44.92s | 7 | 491 |  | 4. Bastian Swillims |  GER | 45.44s | 9 | 626 |  | 5. Renny Quow |  TRI | 45.70s | 6 | 1050 |  | 6. Marcin Marciniszyn |  POL | 45.83s | 8 | 897 |  | 7. Dimitrios Regas |  GRE | 46.22s | 4 | 651 |  | 8. Takeshi Fujiwara | ESA | 46.92s | 3 | 500 |   
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| Heat 2 10:17 | Team | time | L | N |  | 1. Jeremy Wariner |  USA | 45.10s | 6 | 1151 |  | 2. Avard Moncur |  BAH | 45.27s | 1 | 351 |  | 3. David Gillick |  IRL | 45.35s | 7 | 684 |  | 4. Martyn Rooney |  GBR | 45.47s | 8 | 595 |  | 5. Lewis Banda |  ZIM | 45.47s | 4 | 1166 |  | 6. Brice Panel |  FRA | 46.02s | 2 | 571 |  | 7. Felix Marttnez |  PUR | 46.86s | 5 | 915 |  | 8. Abdulla Mohamed Hussein |  SOM | 50.54s | 3 | 1001 |  | 9. Herman Llpez |  NCA | 50.72s | 9 | 846 |   
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| Heat 3 10:24 | Team | time | L | N |  | 1. Alleyne Francique |  GRN | 44.95s | 4 | 658 |  | 2. Leslie Djhone |  FRA | 45.17s | 7 | 561 |  | 3. Ricardo Chambers |  JAM | 45.34s | 6 | 713 |  | 4. Andrew Steele |  GBR | 45.54s | 9 | 596 |  | 5. Rafal Wieruszewski |  POL | 45.94s | 2 | 905 |  | 6. Carlos Santa |  DOM | 45.99s | 3 | 489 |  | 7. Clemens Zeller |  AUT | 46.06s | 8 | 345 |  | -. Yuzo Kanemaru |  JPN | DNF | 5 | 737 |   
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| Heat 4 10:31 | Team | time | L | N |  | 1. LaShawn Merritt |  USA | 44.78s | 4 | 1120 |  | 2. Johan Wissman |  SWE | 44.94s | 2 | 1037 |  | 3. Andrae Williams |  BAH | 45.31s | 1 | 349 |  | 4. Young Talkmore Nyongani |  ZIM | 45.40s | 6 | 1168 |  | 5. Eric Milazar |  MRI | 46.55s | 9 | 842 |  | 6. Andres Silva |  URU | 46.79s | 3 | 1080 |  | 7. Dalibor Spasovski |  MKD | 48.63s | 7 | 834 |  | 8. Karar A.M. Al Abbody |  IRQ | 48.95s | 5 | 686 |  | -. Gakologelwang Masheto |  BOT | DNS | 8 | 381 |   
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| Heat 5 10:38 | Team | time | L | N |  | 1. Gary Kikaya |  COD | 45.21s | 2 | 451 |  | 2. Sanjay Ayre |  JAM | 45.28s | 6 | 706 |  | 3. Timothy Benjamin |  GBR | 45.44s | 1 | 584 |  | 4. Chris Lloyd |  DMA | 45.46s | 4 | 486 |  | 5. Vladislav Frolov |  RUS | 45.69s | 7 | 954 |  | 6. Ioan Lucian Vieru |  ROU | 46.78s | 5 | 932 |  | 7. Mathieu Gnaligo |  BEN | 47.51s | 8 | 366 |  | 8. Nicolau Palanca |  ANG | 48.60s | 3 | 313 |  | -. Hamdan Odha Al-Bishi |  KSA | DNS | 9 | 787 |   
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| Heat 6 10:45 | Team | time | L | N |  | 1. Nery Brenes |  CRC | 45.01s | 5 | 455 |  | 2. Angelo Taylor |  USA | 45.13s | 2 | 1141 |  | 3. William Collazo |  CUB | 45.29s | 9 | 459 |  | 4. California Molefe |  BOT | 45.36s | 4 | 380 |  | 5. Michael Blackwood |  JAM | 45.44s | 1 | 708 |  | 6. Yuki Yamaguchi |  JPN | 46.28s | 3 | 735 |  | 7. Jonathon Lavers |  GIB | 47.97s | 6 | 646 |  | 8. Ivano Bucci |  SMR | 48.07s | 8 | 999 |  | -. Nagmeldin Ali Abubakr |  SUD | DNF | 7 | 1005 |   
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| Heat 7 10:52 | Team | time | L | N |  | 1. Tyler Christopher |  CAN | 45.15s | 9 | 425 |  | 2. Ato Modibo |  TRI | 45.22s | 2 | 1049 |  | 3. Sean Wroe |  AUS | 45.39s | 4 | 329 |  | 4. Daniel Dabrowski |  POL | 45.50s | 3 | 891 |  | 5. Andrea Barberi |  ITA | 45.74s | 8 | 690 |  | 6. Dimitrios Gravalos |  GRE | 46.94s | 5 | 649 |  | 7. Moses Kamut |  VAN | 48.90s | 6 | 1161 |  | -. Lionel Larry |  USA | DNF | 7 | 1114 |   
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| Men 400m Startlist |  | 67 Athletes /44 Countries | Team | Birth | Best | 2007 | Qual. |  | 313 Nicolau Palanca | ANG | 15 Nov 88 | 48.43 | 48.43 | 48.43 |  | 329 Sean Wroe | AUS | 18 Mar 85 | 45.34 | 45.34 | 45.34 |  | 334 John Steffensen | AUS | 30 Aug 82 | 44.73 | 44.92 | 44.73 |  | 345 Clemens Zeller | AUT | 2 Jul 84 | 45.83 | 45.83 | 45.83 |  | 349 Andrae Williams | BAH | 12 Jul 83 | 44.90 | 45.26 | 45.26 |  | 351 Avard Moncur | BAH | 2 Nov 78 | 44.45 | 45.12 | 45.12 |  | 352 Christopher Brown | BAH | 15 Aug 78 | 44.48 | 44.85 | 44.80 |  | 366 Mathieu F. Gnaligo | BEN | 13 Dec 84 | 45.89 | 45.89 | 45.89 |  | 368 Jonathon Williams | BIZ | 29 Aug 83 | 47.62 | 47.62 | 47.62 |  | 380 California Molefe | BOT | 12 Mar 80 | 45.34 | 45.59 | 45.36 |  | 381 Gakologelwang Masheto | BOT | 1 Nov 84 | 45.41 | 45.41 | 45.41 |  | 409 Brandon Simpson | BRN | 6 Sep 81 | 44.64 | 46.86 | 44.64 |  | 425 Tyler Christopher | CAN | 3 Oct 83 | 44.44 | 44.93 | 44.93 |  | 451 Gary Kikaya | COD | 4 Feb 78 | 44.10 | 44.60 | 44.10 |  | 455 Nery Brenes | CRC | 25 Sep 85 | 46.00 | 46.00 | 46.00 |  | 459 William Collazo | CUB | 31 Aug 86 | 45.45 | 45.45 | 45.45 |  | 486 Chris Lloyd | DMA | 10 Oct 80 | 45.40 | 45.40 | 45.40 |  | 489 Carlos Santa | DOM | 7 Jan 78 | 45.05 | 46.17 | 45.13 |  | 491 Arismendy Peguero | DOM | 7 Aug 80 | 45.34 | 45.34 | 45.34 |  | 500 Takeshi Fujiwara | ESA | 5 Aug 85 | 47.75 | 47.75 | 47.75 |  | 561 Leslie Djhone | FRA | 18 Mar 81 | 44.64 | 45.01 | 44.91 |  | 569 Mathieu Lahaye | FRA | 25 Dec 83 | 45.90 | 45.90 | 45.90 |  | 571 Brice Panel | FRA | 13 Jun 83 | 45.54 | 45.54 | 45.54 |  | 584 Timothy Benjamin | GBR | 2 May 82 | 44.56 | 45.28 | 45.28 |  | 595 Martyn Rooney | GBR | 3 Apr 87 | 45.35 | 45.92 | 45.35 |  | 596 Andrew Steele | GBR | 19 Sep 84 | 45.31 | 45.31 | 45.31 |  | 598 Robert Tobin | GBR | 20 Dec 83 | 45.01 | 46.46 | 45.74 |  | 626 Bastian Swillims | GER | 9 Dec 82 | 45.72 | 45.72 | 45.72 |  | 646 Jonathon Lavers | GIB | 5 Sep 86 | 50.18 | 50.18 | 50.18 |  | 649 Dimítrios GrÁvalos | GRE | 18 Apr 84 | 45.94 | 46.39 | 45.94 |  | 651 Dimítrios RÉgas | GRE | 17 Sep 86 | 45.11 | 46.55 | 45.11 |  | 658 Alleyne Francique | GRN | 7 Jun 76 | 44.47 | 45.36 | 44.64 |  | 684 David Gillick | IRL | 9 Jul 83 | 45.23 | 45.23 | 45.23 |  | 686 Karar A.M. Al-Abodi | IRQ | 86 |   |  | 690 Andrea Barberi | ITA | 15 Jan 79 | 45.19 | 45.79 | 45.19 |  | 706 Sanjay Ayre | JAM | 19 Jun 80 | 44.92 | 44.98 | 44.98 |  | 708 Michael Blackwood | JAM | 29 Aug 76 | 44.60 | 45.05 | 44.84 |  | 713 Ricardo Chambers | JAM | 7 Oct 84 | 44.62 | 44.62 | 44.62 |  | 714 Leford Green | JAM | 14 Nov 86 | 45.71 | 45.71 | 45.71 |  | 735 Yuki Yamaguchi | JPN | 22 Feb 84 | 45.18 | 45.91 | 45.89 |  | 737 Yuzo Kanemaru | JPN | 18 Sep 87 | 45.41 | 45.64 | 45.41 |  | 787 Hamdan Odha Al-Bishi | KSA | 5 May 81 | 44.66 |   | 45.64 |  | 834 Dalibor Spasovski | MKD | 9 Jul 82 | 48.71 | 48.71 | 48.71 |  | 842 Eric Milazar | MRI | 1 Jun 75 | 44.69 | 46.03 | 45.58 |  | 846 Hermán LÓpez | NCA | 12 Feb 85 | 49.81 | 49.81 | 49.81 |  | 865 Saul Weigopwa | NGR | 14 Jun 84 | 45.00 | 45.62 | 45.51 |  | 891 Daniel Dabrowski | POL | 23 Sep 83 | 45.33 | 45.33 | 45.33 |  | 897 Marcin Marciniszyn | POL | 7 Sep 82 | 45.54 | 45.77 | 45.54 |  | 905 Rafal Wieruszewski | POL | 24 Feb 81 | 45.56 | 46.47 | 45.56 |  | 915 Félix MartÍnez | PUR | 4 Feb 85 | 45.92 | 45.92 | 45.92 |  | 932 Ioan Lucian Vieru | ROM | 4 Jan 79 | 45.60 | 46.10 | 45.60 |  | 954 Vladislav Frolov | RUS | 25 Jan 80 | 45.09 | 45.63 | 45.09 |  | 999 Ivano Bucci | SMR | 1 Dec 86 | 48.71 | 48.71 | 48.71 |  | 1001 Abdulla Mohamed Hussein | SOM | 7 Dec 87 | 51.02 |   |  | 1005 Nagmeldin Ali Abubakr | SUD | 22 Feb 86 | 44.93 | 45.25 | 45.25 |  | 1037 Johan Wissman | SWE | 2 Nov 82 | 45.03 | 45.03 | 45.03 |  | 1049 Ato Modibo | TRI | 19 Jun 79 | 44.87 | 45.69 | 45.35 |  | 1050 Renny Quow | TRI | 25 Aug 87 | 45.35 | 45.35 | 45.35 |  | 1080 Andrés Silva | URU | 27 Mar 86 | 45.02 | 45.89 | 45.02 |  | 1114 Lionel Larry | USA | 14 Sep 86 | 44.67 | 44.67 | 44.67 |  | 1120 Lashawn Merritt | USA | 27 Jun 86 | 44.06 | 44.06 | 44.06 |  | 1141 Angelo Taylor | USA | 29 Dec 78 | 44.05 | 44.05 | 44.05 |  | 1150 Darold Williamson | USA | 19 Feb 83 | 44.27 | 44.68 | 44.68 |  | 1151 Jeremy Wariner | USA | 31 Jan 84 | 43.50 | 43.50 | 43.50 |  | 1161 Moses Kamut | VAN | 7 Jul 82 | 47.63 | 48.26 | 48.26 |  | 1166 Lewis Banda | ZIM | 16 Sep 83 | 44.58 | 45.54 | 45.10 |  | 1168 Young Talkmore Nyongani | ZIM | 2 Sep 83 | 44.96 | 45.61 | 45.18 |   
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