| Final 08.08 Night | time | gap | L | React. |  50m |  | 1. Ryan Murphy |  USA | 51.97s | OR |   | 0.65 | 25.39s |  | 2. Jiayu Xu |  CHN | 52.31s | 0.34 |   | 0.55 | 25.26s |  | 3. David Plummer |  USA | 52.40s | 0.43 |   | 0.73 | 25.35s |  | 4. Mitchell Larkin |  AUS | 52.43s | 0.46 |   | 0.62 | 25.18s |  | 5. Camille Lacourt |  FRA | 52.70s | 0.73 |   | 0.67 | 25.78s |  | 6. Evgeny Rylov |  RUS | 52.74s | 0.77 |   | 0.55 | 25.92s |  | 7. Ryosuke Irie |  JPN | 53.42s | 1.45 |   | 0.54 | 25.87s |  | 8. Robert Glinta |  ROU | 53.50s | 1.53 |   | 0.68 | 25.94s |   
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| Ranking | time | gap | React | 50m | HR | Semi |  | 1. Ryan Murphy |  USA | 52.49s |   | 0.66 | 25.58s | 1. | 1 |  | 2. David Plummer |  USA | 52.50s | 0.01 | 0.65 | 25.19s | 1. | 2 |  | 3. Mitchell Larkin |  AUS | 52.70s | 0.21 | 0.71 | 25.50s | 2. | 2 |  | 4. Camille Lacourt |  FRA | 52.72s | 0.23 | 0.78 | 25.29s | 3. | 2 |  | 5. Jiayu Xu |  CHN | 52.73s | 0.24 | 0.55 | 25.50s | 2. | 1 |  | 6. Evgeny Rylov |  RUS | 52.84s | 0.35 | 0.56 | 25.68s | 3. | 1 |  | 7. Ryosuke Irie |  JPN | 53.21s | 0.72 | 0.54 | 25.92s | 4. | 1 |  | 8. Robert Glinta |  ROU | 53.34s | 0.85 | 0.60 | 25.48s | 4. | 2 |  |  eliminated |  | 9. Grigory Tarasevich |  RUS | 53.46s | 0.97 | 0.60 | 25.77s | 5. | 2 |  | 10.Christopher Patrick Reid |  RSA | 53.70s | 1.21 | 0.65 | 26.31s | 5. | 1 |  | 11.Chris Walker-Hebborn |  GBR | 53.75s | 1.26 | 0.58 | 25.88s | 6. | 1 |  | 12.Jan-Philip Glania |  GER | 53.94s | 1.45 | 0.92 | 26.07s | 6. | 2 |  | 13.Joshua Beaver |  AUS | 53.95s | 1.46 | 0.54 | 26.01s | 7. | 2 |  | 14.Guilherme Guido |  BRA | 54.16s | 1.67 | 0.66 | 25.58s | 8. | 2 |  | 15.Corey Main |  NZL | 54.29s | 1.80 | 0.55 | 26.46s | 7. | 1 |  |  below Olympic Qualifyng Time 54.36s. |  | 16.Shane Ryan |  IRL | 54.40s | 1.91 | 0.68 | 25.94s | 8. | 1 |   
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| Ranking | time | gap | React | 50m | HR |  | 1. Camille Lacourt |  FRA | 52.72s |   | 0.91 | 25.51s | 3. |  | 2. Jiayu Xu |  CHN | 53.01s | 0.05 | 0.60 | 25.44s | 1. |  | 3. Mitchell Larkin |  AUS | 53.04s | 0.08 | 0.62 | 25.63s | 2. |  | 4. Ryan Murphy |  USA | 53.06s | 0.10 | 0.57 | 25.86s | 2. |  | 5. David Plummer |  USA | 53.19s | 0.23 | 0.63 | 25.48s | 1. |  | 6. Evgeny Rylov |  RUS | 53.25s | 0.29 | 0.54 | 25.77s | 3. |  | 7. Joshua Beaver |  AUS | 53.47s | 0.51 | 0.59 | 25.79s | 3. |  | 8. Ryosuke Irie |  JPN | 53.49s | 0.53 | 0.56 | 26.07s | 4. |  | 9. Robert Glinta |  ROU | 53.51s | 0.55 | 0.60 | 25.74s | 2. |  | 10.Chris Walker-Hebborn |  GBR | 53.54s | 0.58 | 0.54 | 25.92s | 3. |  | 11.Grigory Tarasevich |  RUS | 53.65s | 0.69 | 0.57 | 25.39s | 4. |  | 12.Christopher Patrick Reid |  RSA | 53.68s | 0.72 | 0.66 | 25.82s | 5. |  | 13.Guilherme Guido |  BRA | 53.80s | 0.84 | 0.65 | 26.24s | 5. |  | 14.Shane Ryan |  IRL | 53.85s | 0.89 | 0.68 | 25.48s | 4. |  | 15.Jan-Philip Glania |  GER | 53.87s | 0.91 | 0.68 | 25.81s | 5. |  | 16.Corey Main |  NZL | 53.99s | 1.03 | 0.55 | 26.18s | 1. |  |  eliminated |  | 17.Javier Acevedo |  CAN | 54.11s | 1.15 | 0.57 | 26.61s | 6. |  | 18.Apostolos Christou |  GRE | 54.12s | 1.16 | 0.62 | 26.00s | 6. |  | 19.Junya Hasegawa |  JPN | 54.17s | 1.21 | 0.61 | 26.23s | 7. |  | 20.Hugo Gonzalez |  ESP | 54.18s | 1.22 | 0.57 | 26.46s | 2. |  | 21.Guangyuan Li |  CHN | 54.36s | 1.40 | 0.64 | 26.28s | 3. |  |  below Olympic Qualifyng Time 54.36s. |  | 22.Zheng Wen Quah |  SGP | 54.38s | 1.42 | 0.75 | 26.34s | 7. |  | 23.Radoslaw Kawecki |  POL | 54.39s | 1.43 | 0.65 | 26.30s | 8. |  | 24.Danas Rapsys |  LTU | 54.40s | 1.44 | 0.70 | 26.22s | 4. |  | 25.Gabor Balog |  HUN | 54.48s | 1.52 | 0.67 | 26.27s | 6. |  | 26.Tomasz Polewka |  POL | 54.52s | 1.56 | 0.57 | 25.89s | 5. |  | 27.Yakov Yan Toumarkin Zhuravlev |  ISR | 54.66s | 1.70 | 0.63 | 26.40s | 7. |  | 28.Simone Sabbioni |  ITA | 54.91s | 1.95 | 0.60 | 26.21s | 8. |  | 29.Mikita Tsmyh |  BLR | 54.97s | 2.01 | 0.64 | 25.98s | 8. |  | 30.Youngjun Won |  KOR | 55.05s | 2.09 | 0.55 | 26.89s | 6. |  | 31.Albert Subirats |  VEN | 55.44s | 2.48 | 0.64 | 26.68s | 7. |  | 32.Viktar Staselovich |  BLR | 55.68s | 2.72 | 0.60 | 26.18s | 8. |  |  below Olympic Selection Time (OST) 56.26s. |  | 33.Merdan Atayev |  TKM | 56.34s | 3.38 | 0.67 | 27.23s | 1. |  | 34.Timothy Wynter |  JAM | 57.20s | 4.24 | 0.82 | 26.99s | 2. |  | 35.David van der Colff |  BOT | 57.77s | 4.81 | 0.52 | 28.05s | 3. |  | 36.Driss Lahrichi |  MAR | 58.01s | 5.05 | 0.68 | 28.21s | 4. |  | 37.Yaaqoub Alsaadi |  UAE | 59.58s | 6.62 | 0.66 | 28.21s | 5. |  | 38.Hamdan Bayusuf |  KEN | 1:00.28 | 7.32 | 0.78 | 28.29s | 6. |  | 39.Noah Al-Khulaifi |  QAT | 1:07.47 | 14.51 | 0.70 | 31.48s | 7. |   
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|  Olympic Qualifyng Time by NOC - 29 Swimmers - addtional 10 Swimmers. |  |  Olympic Qualifying Time - 54.36s |  |  2 Quotas - 7 NOC |  | 2 |  Australia | Josh Beaver | Mitch Larkin |  | 2 |  Belarus | Viktar Staselovich | Mikita Tsmyh |  | 2 |  China | Li Guangyuan | Xu Jiayu |  | 2 |  Japan | Junya Hasegawa | Ryosuke Irie |  | 2 |  Poland | Radosław Kawęcki | Tomasz Polewka |  | 2 |  Russia | Evgeny Rylov | Grigory Tarasevich |  | 2 |  United_States | Ryan Murphy | David Plummer |  |  1 Quota - 15 NOC |  | 1 |  Brazil | Guilherme Guido |  | 1 |  Canada | Javier Acevedo |  | 1 |  France | Camille Lacourt |  | 1 |  Germany | Jan-Philip Glania |  | 1 |  Great_Britain | Chris Walker-Hebborn |  | 1 |  Greece | Apostolos Christou |  | 1 |  Hungary | Balog Gábor |  | 1 |  Ireland | Shane Ryan |  | 1 |  Israel | Yakov-Yan Toumarkin |  | 1 |  Italy | Simone Sabbioni |  | 1 |  Lithuania | Danas Rapšys |  | 1 |  New_Zealand | Corey Main |  | 1 |  Romania | Robert Glință |  | 1 |  Singapore | Quah Zheng Wen |  | 1 |  South_Africa | Christopher Reid |  |  Olympic Selection Time - 56.26s - 4 NOC |  | 1 |  Jamaica | Timothy Wynter | [b] |  | 1 |  South_Korea | Won Young-jun |  | 1 |  Spain | Hugo González | [a] |  | 1 |  Venezuela | Albert Subirats | [a] |  |  Universalitiy Places - 6 NOC |  | 1 |  Botswana | David van der Colff |  | 1 |  Kenya | Hamdan Bayusuf |  | 1 |  Morocco | Driss Lahrichi |  | 1 |  Qatar | Noah Al-Khulaifi |  | 1 |  Turkmenistan | Merdan Ataýew |  | 1 |  UA Emirates | Yaaqoub Al-Saadi |  | 39 | Total |   
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