| Final 19:43 | team | time | +time | L | | | 1 .Yannick Agnel |  FRa | 1:43.14 | - | 05 | Stats | | 2 .Taehwan Park |  KOR | 1:44.93 | +1.79s | 03 | Stats | | 2 .Yang Sun |  CHN | 1:44.93 | +1.79s | 04 | Stats | | 4 .Ryan Lochte |  USA | 1:45.04 | +1.90s | 02 | Stats | | 5 .Paul Biedermann |  GER | 1:45.53 | +2.39s | 06 | Stats | | 6 .Robbie Renwick |  GBR | 1:46.53 | +3.39s | 01 | Stats | | 7 .Thomas Fraser-Holmes |  AUS | 1:46.93 | +3.79s | 08 | Stats | | 8 .Danila Izotov |  RUS | 1:47.75 | +4.61s | 07 | Stats |
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 | | Yannick Agnel |
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| Semi 1 | time | +time | L | Rk. | | | 1. Paul Biedermann |  GER | 1:46.10 | - | 02 | 4. | Times | | 2. Ryan Lochte |  USA | 1:46.31 | 0.21s | 04 | 5. | Times | | 3. Robbie Renwick |  GBR | 1:46.65 | 0.55s | 03 | 6. | Times | | 3. Danila Izotov |  RUS | 1:46.65 | 0.55s | 05 | 6. | Times | | 5. Ricky Berens | USA | 1:46.87 | 0.77s | 06 | 9. | Times | | 6. Brett Fraser |  CAY | 1:47.01 | 0.91s | 01 | 12. | Times | | 7. Gregory Mallet |  FRA | 1:47.56 | 1.46s | 07 | 14. | Times | | 8. Dominik Meichtry |  SUI | 1:48.25 | 2.15s | 08 | 15. | Times |
| Semi 2 | time | +time | L | Rk. | | | 1. Yang Sun |  CHN | 1:45.61 | - | 04 | 1. | Times | | 2. Yannick Agnel | FRA | 1:45.84 | 0.23s | 05 | 2. | Times | | 3. Taehwan Park |  KOR | 1:46.02 | 0.41s | 03 | 3. | Times | | 4. Thomas Fraser-Holmes |  AUS | 1:46.80 | 1.19s | 01 | 8. | Times | | 5. Dominik Kozma |  HUN | 1:46.93 | 1.32s | 02 | 10. | Times | | 6. Sebastiaan Verschuren |  NED | 1:46.95 | 1.34s | 07 | 11. | Times | | 7. Kenrick Monk | AUS | 1:47.38 | 1.77s | 06 | 13. | Times | | 8. Artem Lobuzov | RUS | 1:48.26 | 2.65s | 08 | 16. | Times |
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| | S | F | | Semi 1 | | 4 | | Semi 2 | | 4 | | Heat 6 | 6 | 3 | | Heat 5 | 5 | 2 | | Heat 4 | 5 | 3 | | Heat 3 | | Heat 2 | | Heat 1 |
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| Heat 6 | time | time | L | Rk. | | | 1. Yannick Agnel | FRA | 1:46.60 | - | 04 | 3. | Times | | 2. Taehwan Park | KOR | 1:46.79 | 0.19 | 05 | 5. | Times | | 3. Kenrick Monk | AUS | 1:46.94 | 0.34 | 02 | 7. | Times | | 4. Sebastiaan Verschuren | NED | 1:47.31 | +0.71 | 03 | 11. | Times | | 5. Thomas Fraser-Holmes | AUS | 1:47.50 | +0.90 | 06 | 13. | Times | | 6. Artem Lobuzov | RUS | 1:47.91 | +1.31 | 07 | 15. | Times | | 7. Matthew Stanley |  NZL | 1:48.19 | +1.59 | 01 | 18. | Times | | 8. Shaune Fraser | CAY | 1:48.53 | +1.93 | 08 | 20. | Times |
| Heat 5 | time | time | L | Rk. | | | 1. Yang Sun | CHN | 1:46.24 | - | 05 | 1. | Times | | 2. Ryan Lochte | USA | 1:46.45 | 0.21 | 04 | 2. | Times | | 3. Ricky Berens | USA | 1:47.07 | 0.83 | 03 | 8. | Times | | 4. Dominik Kozma | HUN | 1:47.18 | 0.94 | 07 | 9. | Times | | 5. Brett Fraser | CAY | 1:47.74 | 1.50 | 02 | 14. | Times | | 6. Yunqi Li | CHN | 1:48.72 | 2.48 | 06 | 23. | Times | | 7. Benjamin Hockin Brusquetti |  PAR | 1:48.91 | 2.67 | 08 | 26. | Times | | 8. Dion Dreesens | NED | 1:49.00 | 2.76 | 01 | 27. | Times |
| Heat 4 | time | time | L | Rk. | | | 1. Danila Izotov | RUS | 1:46.61 | - | 05 | 4. | Times | | 2. Robbie Renwick | GBR | 1:46.86 | 0.25 | 02 | 6. | Times | | 3. Paul Biedermann | GER | 1:47.27 | 0.66 | 04 | 10. | Times | | 4. Gregory Mallet | FRA | 1:47.39 | 0.78 | 03 | 12. | Times | | 5. Dominik Meichtry | SUI | 1:47.97 | 1.36 | 06 | 16. | Times | | 6. Ieuan Lloyd | GBR | 1:48.52 | 1.91 | 01 | 19. | Times | | 7. Clemens Rapp | GER | 1:48.75 | 2.14 | 07 | 24. | Times | | 8. Marco Belotti |  ITA | 1:49.14 | 2.53 | 08 | 29. | Times |
| Heat 3 | time | time | L | Rk. | | | 1. Blake Worsley |  CAN | 1:48.14 | - | 03 | 17. | Times | | 2. Nimrod Shapira Bar-or |  ISR | 1:48.60 | 0.46 | 04 | 21. | Times | | 3. Cristian Quintero Valero |  VEN | 1:48.71 | 0.57 | 05 | 22. | Times | | 4. Glenn Surgeloose |  BEL | 1:48.77 | 0.63 | 07 | 25. | Times | | 5. David Brandl |  AUT | 1:49.00 | 0.86 | 02 | 27. | Times | | 6. Ahmed Mathlouthi |  TUN | 1:49.68 | 1.54 | 06 | 30. | Times | | 7. Tiago Venancio |  POR | 1:52.36 | 4.22 | 08 | 34. | Times | | -. Mads Glaesner |  DEN | DNS | - | 01 | |
| Heat 2 | time | time | L | Rk. | | | 1. Matias Koski |  FIN | 1:49.84 | - | 05 | 31. | Times | | 2. Radovan Siljevski |  SRB | 1:51.40 | 1.56 | 04 | 32. | Times | | 3. Mario Montoya |  CRC | 1:51.66 | 1.82 | 02 | 33. | Times | | 4. Sebastian Jahnsen Madico |  PER | 1:52.36 | 2.52 | 03 | 34. | Times | | 5. Jessie Lacuna |  PHI | 1:52.91 | 3.07 | 06 | 36. | Times | | 6. Raul Martinez Colomer |  PUR | 1:54.23 | 4.39 | 07 | 38. | Times |
| Heat 1 | time | time | L | Rk. | | | 1. Nicholas Schwab Alfaro |  DOM | 1:53.41 | - | 04 | 37. | Times | | 2. Gilles Marquet |  MRI | 1:58.91 | 5.50 | 05 | 39. | Times | | 3. Anderson Chee Wei Lim |  BRU | 2:02.26 | 8.85 | 03 | 40. | Times |
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| Total eligible to participate 38+3 swimmers |
| Olympic Qualifying Time - 1:47.82 - 18+5 | | Thomas Fraser-Holmes | AUS | 7. | Kenrick Monk | AUS | 13. | | Brett Fraser | CAY | 12. | Shaune Fraser | CAY | 20. | | Li Yunqi | CHN | 23. | Sun Yang | CHN | 2. | | Yannick Agnel | FRA | 1. | Grégory Mallet | FRA | 14. | | Ieuan Lloyd | GBR | 19. | Robert Renwick | GBR | 6. | | Paul Biedermann | GER | 5. | Clemens Rapp | GER | 24. | | Dion Dreesens | NED | 28. | Sebastiaan Verschuren | NED | 11. | | Danila Izotov | RUS | 8. | Artem Lobuzov | RUS | 16. | | Ricky Berens | USA | 9. | Ryan Lochte | USA | 4. | | Dominik Kozma | HUN | 10. | | Park Tae-Hwan | KOR | 2. | | Matthew Stanley | NZL | 18. | | Benjamin Hockin | PAR | 26. | | Dominik Meichtry | SUI | 15. |
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| Olympic Selection Time - 1:51.59 - 10 | | Marco Belotti | ITA | 1:48.09 | 29. | | Nimrod Shapira Bar-Or | ISR | 1:48.11 | 21. | | Cristian Quintero | VEN | 1:48.65 | 22. | | Blake Worsley | CAN | 1:48.69 | 17. | | Ahmed Mathlouthli | TUN | 1:48.71 | 30. | | David Brandl | AUT | 1:48.95 | 27. | | Glenn Surgeloose | BEL | 1:48.96 | 25. | | Tiago Venâncio | POR | 1:49.44 | 34. | | Radovan Siljevski | SRB | 1:49.47 | 32. | | Matias Koski | FIN | qoe | 31. | | Mads Glaener | DEN | qoe | DNS |
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| Wildcard Places - 5 | | Anderson Lim | BRU | 40. | | Mario Montoya | CRC | 33. | | Nicolas Schwab | DOM | 37. | | Matthew Marquet | MRI | 39. | | Jessie Lacuna | PHI | 36. | | Sebastian JJahnsen | PER | 34. | | Raul Martinez | PUR | 38. |
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| Olympic Qualification time | time | place | date | birth | | 1. Yannick Agnel | FRA | 1:44.42 | Dunkerke (FRA) | 18.03.2012 | 09/06/1992 | | 2. Ryan Lochte | USA | 1:44.44 | Shanghai (CHN) | 24.07.2011 | 03/08/1984 | | 3. Paul Biedermann | GER | 1:44.88 | Shanghai (CHN) | 24.07.2011 | 07/08/1986 | | 4. Taehwan Park | KOR | 1:44.92 | Shanghai (CHN) | 24.07.2011 | 27/09/1989 | | 5. Yang Sun | CHN | 1:44.99 | Wuhan (CHN) | 02.04.2011 | 01/12/1991 | | 6. Danila Izotov | RUS | 1:46.14 | Moscow (RUS) | 18.04.2011 | 02/10/1991 | | 7. Sebastiaan Verschuren | NED | 1:46.53 | Shanghai (CHN) | 24.07.2011 | 07/10/1988 | | 8. Ricky Berens | USA | 1:46.56 | Omaha (USA) | 25.06.2012 | 21/04/1988 | | 9. Amaury Leveaux | FRA | 1:46.72 | Dunkerke (FRA) | 18.03.2012 | 02/12/1985 | | 10.Thomas Fraser-Holmes | AUS | 1:46.88 | Adelaide (AUS) | 15.03.2012 | 09/10/1991 | | 11.Yunqi Li | CHN | 1:47.02 | Nanchang (CHN) | 17.10.2011 | 28/08/1993 | | 12.Dominik Meichtry | SUI | 1:47.02 | Shanghai (CHN) | 24.07.2011 | 18/11/1984 | | 13.Kenrick Monk | AUS | 1:47.16 | Adelaide (AUS) | 15.03.2012 | 01/01/1988 | | 14.Brett Fraser | CAY | 1:47.18 | Guadalajara (MEX) | 16.10.2011 | 28/08/1989 | | 15.Robbie Renwick | GBR | 1:47.25 | London (GBR) | 03.03.2012 | 21/07/1988 | | 16.Artem Lobuzov | RUS | 1:47.43 | Moscow (RUS) | 17.04.2012 | 24/01/1991 | | 17.Dominik Kozma | HUN | 1:47.52 | Debrecen (HUN) | 21.05.2012 | 10/04/1991 | | 18.Clemens Rapp | GER | 1:47.57 | Berlin (GER) | 10.05.2012 | 14/07/1989 | | 19.Matthew Stanley | NZL | 1:47.57 | Auckland (NZL) | 25.03.2012 | 15/01/1992 | | 20.Dion Dreesens | NED | 1:47.61 | Eindhoven (NED) | 12.04.2012 | 30/04/1993 | | 21.Ieuan Lloyd | GBR | 1:47.68 | London (GBR) | 03.03.2012 | 09/07/1993 | | 22.Shaune Fraser | CAY | 1:47.73 | Shanghai (CHN) | 24.07.2011 | 29/03/1988 | | 23.Benjamin Hockin | PAR | 1:47.79 | Malaga (ESP) | 29.03.2012 | 27/09/1986 |
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London 2012