| Final Saturday 08.08 18:13 | time | gap | L | React. | 50m |  | 1. Chad Le Clos |  RSA | 50.56s | AF | 3 | 0.64 | 23.72s | 2. |  | 2. Laszlo Cseh |  HUN | 50.87s | 0.31 | 5 | 0.75 | 23.76s | 3. |  | 3. Joseph Isaac Schooling |  SIN | 50.96s | AS0.40 | 1 | 0.60 | 23.53s | 1. |  | 4. Tom Shields |  USA | 51.06s | 0.50 | 4 | 0.77 | 24.17s | 7. |  | 5. Mehdy Metella |  FRA | 51.24s | 0.68 | 7 | 0.70 | 24.05s | 6. |  | 6. Konrad Czerniak |  POL | 51.28s | 0.72 | 6 | 0.66 | 23.78s | 4. |  | 7. Pawel Korzeniowski |  POL | 51.46s | 0.90 | 8 | 0.72 | 24.20s | 8. |  | 8. Zhuhao Li |  CHN | 51.66s | 1.10 | 2 | 0.67 | 23.99s | 5. |   
| World and World Championships Record: Michael Phelps (USA) 49.82s, Roma (ITA), 01.08.2009. |  | World Junior Record: World Best Time. |  | Qualification times. Standard A: 52.52s, Standard B: 54.36s |   
 | 
 |  
| Ranking | time | gap | L | React. | 50m | Semi | birth |  | 1. Tom Shields |  USA | 51.03s |   | 4 | 0.71 | 23.93s | Semi 1 | 1991 |  | 1. Laszlo Cseh |  HUN | 51.03s |   | 4 | 0.76 | 24.16s | Semi 2 | 1985 |  | 3. Chad Le Clos |  RSA | 51.11s | 0.08 | 6 | 0.64 | 23.95s | Semi 1 | 1992 |  | 4. Konrad Czerniak |  POL | 51.29s | 0.26 | 5 | 0.66 | 23.45s | Semi 1 | 1989 |  | 5. Zhuhao Li |  CHN | 51.33s | WJ0.30 | 5 | 0.71 | 24.28s | Semi 2 | 1999 |  | 6. Mehdy Metella |  FRA | 51.39s | 0.36 | 1 | 0.69 | 24.14s | Semi 2 | 1992 |  | 7. Joseph Isaac Schooling |  SIN | 51.40s | 0.37 | 3 | 0.60 | 23.83s | Semi 2 | 1995 |  | 8. Pawel Korzeniowski |  POL | 51.51s | 0.48 | 6 | 0.70 | 24.19s | Semi 2 | 1985 |  |  eliminated |  | 9. Takuro Fujii |  JPN | 51.58s | 0.55 | 3 | 0.63 | 24.22s | Semi 1 | 1985 |  | 10.Matteo Rivolta |  ITA | 51.64s | 0.61 | 2 | 0.65 | 24.13s | Semi 2 | 1991 |  | 11.Steffen Deibler |  GER | 52.07s | 1.04 | 7 | 0.66 | 24.32s | Semi 2 | 1987 |  | 12.Jayden Robert Hadler |  AUS | 52.09s | 1.06 | 1 | 0.64 | 24.10s | Semi 1 | 1993 |  | 13.Tim Phillips |  USA | 52.14s | 1.11 | 2 | 0.66 | 23.74s | Semi 1 | 1990 |  | 14.Piero Codia |  ITA | 52.22s | 1.19 | 7 | 0.66 | 24.20s | Semi 1 | 1989 |  | 15.Tommaso D'orsogna |  AUS | 52.26s | 1.23 | 8 | 0.70 | 24.40s | Semi 2 | 1990 |  | 16.Pavel Sankovich |  BLR | 52.63s | 1.60 | 8 | 0.70 | 24.58s | Semi 1 | 1990 |   
 | 
 |  
| Ranking | time | gap | L | React. | 50m | Heat | birth |  | 1. Laszlo Cseh |  HUN | 50.91s |   | 6 | 0.75 | 24.08s | Heat 6 | Q1985 |  | 2. Tom Shields |  USA | 51.09s | 0.18 | 4 | 0.72 | 24.12s | Heat 7 | Q1991 |  | 3. Zhuhao Li |  CHN | 51.54s | Wj0.63 | 7 | 0.76 | 24.29s | Heat 7 | Q1999 |  | 4. Konrad Czerniak |  POL | 51.58s | 0.67 | 4 | 0.66 | 23.98s | Heat 6 | Q1989 |  | 5. Joseph Isaac Schooling |  SIN | 51.65s | 0.74 | 6 | 0.58 | 24.04s | Heat 8 | Q1995 |  | 6. Takuro Fujii |  JPN | 51.76s | 0.85 | 2 | 0.64 | 24.21s | Heat 7 | Q1985 |  | 7. Pawel Korzeniowski |  POL | 51.79s | 0.88 | 6 | 0.73 | 24.40s | Heat 7 | Q1985 |  | 8. Chad Le Clos |  RSA | 51.83s | 0.92 | 4 | 0.65 | 24.33s | Heat 8 | Q1992 |  | 9. Matteo Rivolta |  ITA | 51.88s | 0.97 | 1 | 0.71 | 24.21s | Heat 7 | Q1991 |  | 10.Tim Phillips |  USA | 51.90s | 0.99 | 5 | 0.68 | 23.71s | Heat 7 | Q1990 |  | 10.Steffen Deibler |  GER | 51.90s | 0.99 | 7 | 0.66 | 24.29s | Heat 8 | Q1987 |  | 12.Piero Codia |  ITA | 51.94s | 1.03 | 3 | 0.66 | 24.34s | Heat 6 | Q1989 |  | 13.Mehdy Metella |  FRA | 52.07s | 1.16 | 2 | 0.71 | 24.38s | Heat 8 | Q1992 |  | 14.Jayden Robert Hadler |  AUS | 52.17s | 1.26 | 3 | 0.64 | 23.94s | Heat 7 | Q1993 |  | 15.Tommaso D'Orsogna |  AUS | 52.22s | 1.31 | 1 | 0.67 | 24.06s | Heat 8 | Q1990 |  | 16.Pavel Sankovich |  BLR | 52.29s | 1.38 | 5 | 0.70 | 24.42s | Heat 6 | Q1990 |  |  eliminated |  | 17.Adam Barrett |  GBR | 52.33s | 1.42 | 2 | 0.66 | 24.27s | Heat 6 | 1992 |  | 18.Santiago Grassi |  ARG | 52.36s | 1.45 | 2 | 0.63 | 24.27s | Heat 5 | 1996 |  | 19.Thomas Patrick Laxton |  GBR | 52.37s | 1.46 | 8 | 0.69 | 24.50s | Heat 6 | 1989 |  | 20.Evgeny Koptelov |  RUS | 52.38s | 1.47 | 8 | 0.70 | 24.41s | Heat 8 | 1993 |  | 21.Takeshi Kawamoto |  JPN | 52.45s | 1.54 | 7 | 0.68 | 24.40s | Heat 6 | 1995 |  | 22.Viacheslav Prudnikov |  RUS | 52.47s | 1.56 | 3 | 0.69 | 24.14s | Heat 8 | 1993 |  | 23.Viktor B Bromer |  DEN | 52.53s | 1.62 | 9 | 0.64 | 24.68s | Heat 7 | 1993 |  | 24.Arthur Mendes Filho |  BRA | 52.55s | 1.64 | 8 | 0.64 | 24.53s | Heat 7 | 1993 |  | 25.Luis Carlos Martinez |  GUA | 52.72s | 1.81 | 9 | 0.63 | 24.77s | Heat 6 | 1995 |  | 26.Yauhen Tsurkin |  BLR | 52.73s | 1.82 | 5 | 0.64 | 24.39s | Heat 8 | 1990 |  | 27.Alexandru Coci |  ROU | 52.89s | 1.98 | 4 | 0.61 | 24.59s | Heat 5 | 1989 |  | 27.Andreas Vazaios |  GRE | 52.89s | 1.98 | 5 | 0.68 | 24.51s | Heat 5 | 1994 |  | 29.Nico Van Duijn |  SUI | 52.94s | 2.03 | 1 | 0.68 | 24.64s | Heat 5 | 1990 |  | 30.Ryan Pini |  PNG | 53.02s | 2.11 | 7 | 0.71 | 24.50s | Heat 5 | 1981 |  | 31.Ivan Lender |  SRB | 53.04s | 2.13 | 9 | 0.70 | 24.16s | Heat 8 | 1990 |  | 32.Robert Zbogar |  SLO | 53.10s | 2.19 | 6 | 0.66 | 25.15s | Heat 3 | 1989 |  | 33.Jan Sefl |  CZE | 53.21s | 2.30 | 0 | 0.70 | 24.34s | Heat 5 | 1990 |  | 34.Simon Sjodin |  SWE | 53.40s | 2.49 | 5 | 0.68 | 25.40s | Heat 4 | 1986 |  | 35.Omar Ahmed Eissa Eid |  EGY | 53.68s | 2.77 | 1 | 0.69 | 24.87s | Heat 4 | 1996 |  | 35.Albert Subirats |  VEN | 53.68s | 2.77 | 0 | 0.71 | 24.88s | Heat 6 | 1986 |  | 37.Guy Marcos Barnea |  ISR | 53.76s | 2.85 | 3 | 0.65 | 25.24s | Heat 3 | 1987 |  | 37.Geoffrey Robin Cheah |  HKG | 53.76s | 2.85 | 9 | 0.70 | 24.95s | Heat 5 | 1990 |  | 39.Benjamin Hockin |  PAR | 53.92s | 3.01 | 3 | 0.73 | 24.71s | Heat 4 | 1986 |  | 40.Mario Todorovic |  CRO | 54.00s | 3.09 | 4 | 0.67 | 24.93s | Heat 4 | 1988 |  | 41.Glenn Victor Sutanto |  INA | 54.18s | 3.27 | 6 | 0.67 | 25.28s | Heat 5 | 1989 |  | 42.Zuhayr Pigot |  SUR | 54.20s | 3.29 | 1 | 0.74 | 25.30s | Heat 3 | 1997 |  | 43.Nuno Quintanilha |  POR | 54.27s | 3.36 | 7 | 0.70 | 25.17s | Heat 4 | 1987 |  | 44.Abbas Qali |  KUW | 54.35s | 3.44 | 5 | 0.63 | 25.10s | Heat 3 | 1992 |  | 45.Ralf Tribuntsov |  EST | 54.38s | 3.47 | 2 | 0.72 | 24.76s | Heat 4 | 1994 |  | 46.Franco Reyes Valzovano |  PAN | 54.49s | 3.58 | 8 | 0.56 | 24.96s | Heat 3 | 1998 |  | 47.Bradlee Logan Taylor Ashby |  NZL | 54.57s | 3.66 | 6 | 0.70 | 25.58s | Heat 4 | 1995 |  | 48.Esnaider Reales |  COL | 54.63s | 3.72 | 9 | 0.71 | 25.84s | Heat 4 | 1996 |  | 49.Tadas Duskinas |  LTU | 54.76s | 3.85 | 4 | 0.64 | 24.88s | Heat 3 | 1994 |  | 50.Daniel Ramirez Carranza |  MEX | 55.28s | 4.37 | 0 | 0.60 | 25.01s | Heat 7 | 1992 |  | 51.Teimuraz Kobakhidze |  GEO | 55.37s | 4.46 | 9 | 0.69 | 25.83s | Heat 3 | 1995 |  | 52.Ifa Paea |  TGA | 55.80s | 4.89 | 4 | 0.70 | 25.91s | Heat 2 | 1989 |  | 53.Ayman Kelzi |  SYR | 55.84s | 4.93 | 0 | 0.73 | 25.87s | Heat 3 | 1993 |  | 54.Raphael Stacchiotti |  LUX | 55.96s | 5.05 | 7 | 0.64 | 25.73s | Heat 3 | 1992 |  | 55.Ralph Goveia |  ZAM | 56.34s | 5.43 | 5 | 0.62 | 26.12s | Heat 2 | 1996 |  | 56.Nouamane Batahi |  MAR | 57.11s | 6.20 | 1 | 0.67 | 26.87s | Heat 2 | 1994 |  | 57.Aldo Castillo |  BOL | 57.38s | 6.47 | 6 | 0.67 | 26.67s | Heat 2 | 1995 |  | 58.Winter Heaven |  SAM | 57.47s | 6.56 | 2 | 0.70 | 26.54s | Heat 2 | 1993 |  | 59.Joshua Runako Daniel |  LCA | 57.66s | 6.75 | 9 | 0.66 | 26.43s | Heat 2 | 1995 |  | 60.Cherantha De Silva KT |  Fin | 57.79s | 6.88 | 3 | 0.64 | 26.84s | Heat 2 | 1996 |  | 61.Oumar Toure |  MLI | 58.00s | 7.09 | 0 | 0.62 | 26.56s | Heat 2 | 1996 |  | 62.Bosko Radulovic |  MNE | 58.10s | 7.19 | 8 | 0.76 | 26.42s | Heat 2 | 1996 |  | 63.Ifeakachuku Nmor |  NGR | 58.48s | 7.57 | 3 | 0.74 | 27.04s | Heat 1 | 1996 |  | 64.Batsaikhan Dulguun |  MGL | 58.57s | 7.66 | 7 | 0.72 | 26.97s | Heat 2 | 1986 |  | 65.Sovijja Pou |  CAM | 58.92s | 8.01 | 4 | 0.66 | 27.30s | Heat 1 | 1995 |  | 66.Hasan Isam Sadeq Sadeq |  IRQ | 59.58s | 8.67 | 5 | 0.67 | 28.09s | Heat 1 | 2001 |  | 67.Ismael Kane |  SEN | 1:00.94 | 10.03 | 6 | 0.68 | 27.82s | Heat 1 | 1997 |  | 68.Hannibal David Gaskin |  GUY | 1:01.47 | 10.56 | 7 | 0.63 | 28.45s | Heat 1 | 1997 |  | 69.Myat Thint |  MYA | 1:02.78 | 11.87 | 2 | 0.73 | 29.31s | Heat 1 | 2002 |  | 70.Hilal Hemed Hilal |  TAN | 1:03.87 | 12.96 | 1 | 0.69 | 29.38s | Heat 1 | 1994 |  | 71.Mark Hoare |  SWZ | 1:04.76 | 13.85 | 0 | 0.75 | 28.87s | Heat 1 | 1995 |  | 72.Belly-Cresus Ganira |  BDI | 1:07.16 | 16.25 | 8 | 0.76 | 29.36s | Heat 1 | 2000 |  | 73.Chaoili Aonzoudine |  COM | 1:21.89 | 30.98 | 9 | 0.80 | 30.89s | Heat 1 | 1990 |  | -. Quy Phuoc Hoang |  VIE | DNS |   | 2 |   |   | Heat 3 | 1993 |  | -. Dylan Carter |  TRI | DNS |   | 0 |   |   | Heat 4 | 1996 |  | -. Louis Croenen |  BEL | DNS |   | 8 |   |   | Heat 4 | 1994 |  | -. Rafael Munoz |  ESP | DNS |   | 3 |   |   | Heat 5 | 1988 |  | -. Mauricio Rafael Fiol Villanueva |  PER | DNS |   | 8 |   |   | Heat 5 | 1994 |  | -. Thiago Pereira |  BRA | DNS |   | 1 |   |   | Heat 6 | 1986 |  | -. Mateo Gonzalez |  MEX | DNS |   | 0 |   |   | Heat 8 | 1996 |   
 | 
 |  
| Swimmer | Q. time | Birth | L | Heat |  | 4. Tom Shields |  USA | 51.29s | 1991 | 4 | Heat 7 |  | 1. Chad Le Clos |  RSA | 51.29s | 1992 | 4 | Heat 8 |  | 6. Konrad Czerniak |  POL | 51.37s | 1989 | 4 | Heat 6 |  | -. Yauhen Tsurkin |  BLR | 51.44s | 1990 | 5 | Heat 8 |  | -. Tim Phillips |  USA | 51.49s | 1990 | 5 | Heat 7 |  | -. Pavel Sankovich |  BLR | 51.57s | 1990 | 5 | Heat 6 |  | -. Viacheslav Prudnikov |  RUS | 51.60s | 1993 | 3 | Heat 8 |  | -. Jayden Robert Hadler |  AUS | 51.66s | 1993 | 3 | Heat 7 |  | -. Piero Codia |  ITA | 51.69s | 1989 | 3 | Heat 6 |  | 3. Joseph Isaac Schooling |  SIN | 51.69s | 1995 | 6 | Heat 8 |  | 7. Pawel Korzeniowski |  POL | 51.71s | 1985 | 6 | Heat 7 |  | 2. Laszlo Cseh |  HUN | 51.73s | 1985 | 6 | Heat 6 |  | 5. Mehdy Metella |  FRA | 51.74s | 1992 | 2 | Heat 8 |  | -. Takuro Fujii |  JPN | 51.77s | 1985 | 2 | Heat 7 |  | -. Adam Barrett |  GBR | 51.80s | 1992 | 2 | Heat 6 |  | -. Steffen Deibler |  GER | 51.81s | 1987 | 7 | Heat 8 |  | 8. Zhuhao Li |  CHN | 51.82s | 1999 | 7 | Heat 7 |  | -. Takeshi Kawamoto |  JPN | 51.89s | 1995 | 7 | Heat 6 |  | -. Tommaso D'Orsogna |  AUS | 51.90s | 1990 | 1 | Heat 8 |  | -. Matteo Rivolta |  ITA | 51.92s | 1991 | 1 | Heat 7 |  | -. Thiago Pereira |  BRA | 52.27s | 1986 | 1 | Heat 6 |  | -. Arthur Mendes Filho |  BRA | 52.33s | 1993 | 8 | Heat 7 |  | -. Evgeny Koptelov |  RUS | 52.33s | 1993 | 8 | Heat 8 |  | -. Thomas Patrick Laxton |  GBR | 52.40s | 1989 | 8 | Heat 6 |  | -. Mateo Gonzalez |  MEX | 52.49s | 1996 | 0 | Heat 8 |  | -. Daniel Ramirez Carranza |  MEX | 52.50s | 1992 | 0 | Heat 7 |  | -. Albert Subirats |  VEN | 52.52s | 1986 | 0 | Heat 6 |  |  Standard A: 52.52s |  | -. Ivan Lender |  SRB | 52.59s | 1990 | 9 | Heat 8 |  | -. Viktor B Bromer |  DEN | 52.72s | 1993 | 9 | Heat 7 |  | -. Luis Carlos Martinez |  GUA | 52.75s | 1995 | 9 | Heat 6 |  | -. Alexandru Coci |  ROU | 52.85s | 1989 | 4 | Heat 5 |  | -. Andreas Vazaios |  GRE | 52.89s | 1994 | 5 | Heat 5 |  | -. Rafael Munoz |  ESP | 52.90s | 1988 | 3 | Heat 5 |  | -. Glenn Victor Sutanto |  INA | 52.90s | 1989 | 6 | Heat 5 |  | -. Santiago Grassi |  ARG | 52.94s | 1996 | 2 | Heat 5 |  | -. Ryan Pini |  PNG | 52.95s | 1981 | 7 | Heat 5 |  | -. Nico Van Duijn |  SUI | 53.01s | 1990 | 1 | Heat 5 |  | -. Mauricio Rafael Fiol Villanueva |  PER | 53.03s | 1994 | 8 | Heat 5 |  | -. Jan Sefl |  CZE | 53.30s | 1990 | 0 | Heat 5 |  | -. Geoffrey Robin Cheah |  HKG | 53.36s | 1990 | 9 | Heat 5 |  | -. Mario Todorovic |  CRO | 53.42s | 1988 | 4 | Heat 4 |  | -. Simon Sjodin |  SWE | 53.44s | 1986 | 5 | Heat 4 |  | -. Benjamin Hockin |  PAR | 53.45s | 1986 | 3 | Heat 4 |  | -. Bradlee Logan Taylor Ashby |  NZL | 53.72s | 1995 | 6 | Heat 4 |  | -. Ralf Tribuntsov |  EST | 53.79s | 1994 | 2 | Heat 4 |  | -. Nuno Quintanilha |  POR | 53.80s | 1987 | 7 | Heat 4 |  | -. Omar Ahmed Mohamed Eissa Eid |  EGY | 53.81s | 1996 | 1 | Heat 4 |  | -. Louis Croenen |  BEL | 53.86s | 1994 | 8 | Heat 4 |  | -. Dylan Carter |  TRI | 53.89s | 1996 | 0 | Heat 4 |  | -. Esnaider Reales |  COL | 53.92s | 1996 | 9 | Heat 4 |  | -. Tadas Duskinas |  LTU | 53.97s | 1994 | 4 | Heat 3 |  | -. Abbas Qali |  KUW | 54.00s | 1992 | 5 | Heat 3 |  | -. Guy Marcos Barnea |  ISR | 54.05s | 1987 | 3 | Heat 3 |  | -. Robert Zbogar |  SLO | 54.11s | 1989 | 6 | Heat 3 |  | -. Quy Phuoc Hoang |  VIE | 54.21s | 1993 | 2 | Heat 3 |  | -. Raphael Stacchiotti |  LUX | 54.30s | 1992 | 7 | Heat 3 |  |  Standard B: 54.36s |  | -. Zuhayr Pigot |  SUR | 55.00s | 1997 | 1 | Heat 3 |  | -. Franco Antonio Reyes Valzovano |  PAN | 55.41s | 1998 | 8 | Heat 3 |  | -. Ayman Kelzi |  SYR | 55.43s | 1993 | 0 | Heat 3 |  | -. Teimuraz Kobakhidze |  GEO | 55.55s | 1995 | 9 | Heat 3 |  | -. Ifa Paea |  TGA | 55.62s | 1989 | 4 | Heat 2 |  | -. Ralph Goveia |  ZAM | 56.16s | 1996 | 5 | Heat 2 |  | -. Cherantha De Silva KT |  Fin | 56.68s | 1996 | 3 | Heat 2 |  | -. Aldo Castillo |  BOL | 57.28s | 1995 | 6 | Heat 2 |  | -. Winter Heaven |  SAM | 57.41s | 1993 | 2 | Heat 2 |  | -. Batsaikhan Dulguun |  MGL | 58.00s | 1986 | 7 | Heat 2 |  | -. Nouamane Batahi |  MAR | 58.13s | 1994 | 1 | Heat 2 |  | -. Bosko Radulovic |  MNE | 58.18s | 1996 | 8 | Heat 2 |  | -. Oumar Toure |  MLI | 59.00s | 1996 | 0 | Heat 2 |  | -. Joshua Runako Daniel |  LCA | 59.32s | 1995 | 9 | Heat 2 |  | -. Sovijja Pou |  CAM | 59.62s | 1995 | 4 | Heat 1 |  | -. Hasan Isam Sadeq Sadeq |  IRQ | 1:00.60 | 2001 | 5 | Heat 1 |  | -. Ifeakachuku Nmor |  NGR | 1:00.84 | 1996 | 3 | Heat 1 |  | -. Ismael Kane |  SEN | 1:01.74 | 1997 | 6 | Heat 1 |  | -. Myat Thint |  MYA | 1:02.63 | 2002 | 2 | Heat 1 |  | -. Hannibal David Gaskin |  GUY | 1:03.87 | 1997 | 7 | Heat 1 |  | -. Hilal Hemed Hilal |  TAN | 1:04.68 | 1994 | 1 | Heat 1 |  | -. Belly-Cresus Ganira |  BDI | 1:06.88 | 2000 | 8 | Heat 1 |  | -. Mark Hoare |  SWZ | 1:08.45 | 1995 | 0 | Heat 1 |  | -. Chaoili Aonzoudine |  COM | 1:35.09 | 1990 | 9 | Heat 1 |   
 | 
 |  
 |