| Final 10.08 Night | time | L |  | 1. Kyle Chalmers |   Australia | 47.58s WJR | 5 |  | 2. Pieter Timmers |   Belgyum | 47.80s NR | 7 |  | 3. Nathan Adrian |   United States | 47.85s | 4 |  | 4. Santo Condorelli |   Canada | 47.88s | 6 |  | 5. Duncan Scott |   Great Britain | 48.01s NR | 1 |  | 6. Caeleb Dressel |   United States | 48.02s | 2 |  | 7. Cameron McEvoy |   Australia | 48.12s | 3 |  | 8. Marcelo Chierighini |   Brazil | 48.41s | 8 |   
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| Ranking | time | L | HR |  | 1. Nathan Adrian |   United States | 47.83s | 8 | 1 1. |  | 2. Kyle Chalmers |   Australia | 47.88s | 4 | 1 2. |  | 3. Cameron McEvoy |   Australia | 47.93s | 5 | 2 1.  |  | 3. Santo Condorelli |   Canada | 47.93s | 3 | 2 2. |  | 5. Caeleb Dressel |   United States | 47.97s | 4 | 3 1. |  | 6. Pieter Timmers |   Belgyum | 48.14s | 2 | 3 2. |  | 7. Duncan Scott |   Great Britain | 48.20s | 5 | 4 2. |  | 8. Marcelo Chierighini |   Brazil | 48.23s | 1 | 5 2. |  |  eliminated |  | 9. Vladimir Morozov |   Russia | 48.26s | 6 | 4 1. |  | 10.Sebastiaan Verschuren |   Netherlands | 48.28s | 7 | 5 1. |  | 10.Yuri Kisil |   Canada | 48.28s | 7 | 6 2. |  | 12.Ning Zetao |   China | 48.37s | 1 | 6 1. |  | 13.Luca Dotto |   Italy | 48.49s | 2 | 7 1. |  | 14.Clément Mignon |   France | 48.57s | 8 | 7 2. |  | 15.Damian Wierling |   Germany | 48.66s | 6 | 8 2. |  | 16.Joseph Schooling |   Singapore | 48.70s | 3 | 8 1. |   
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| Ranking | time | L | H |  | 1. Kyle Chalmers |   Australia | 47.90s | 3 | 7. |  | 2. Caeleb Dressel |   United States | 47.91s | 2 | 7. |  | 3. Duncan Scott |   Great Britain | 48.01s | 6 | 5. |  | 4. Cameron McEvoy |   Australia | 48.12s | 4 | 8. |  | 5. Santo Condorelli |   Canada | 48.22s | 5 | 6. |  | 6. Joseph Schooling |   Singapore | 48.27s | 8 | 6. |  | 7. Damian Wierling |   Germany | 48.35s | 8 | 8. |  | 8. Vladimir Morozov |   Russia | 48.39s | 3 | 6. |  | 9. Pieter Timmers |   Belgyum | 48.46s | 2 | 8. |  | 10.Luca Dotto |   Italy | 48.47s | 5 | 8. |  | 11.Yuri Kisil |   Canada | 48.49s | 8 | 7. |  | 12.Sebastiaan Verschuren |   Netherlands | 48.51s | 2 | 6. |  | 13.Marcelo Chierighini |   Brazil | 48.53s | 6 | 6. |  | 14.Ning Zetao |   China | 48.57s | 4 | 6. |  | 14.Clément Mignon |   France | 48.57s | 3 | 8. |  | 16.Nathan Adrian |   United States | 48.58s | 4 | 7. |  |  eliminated |  | 17.Katsumi Nakamura |   Japan | 48.61s | 1 | 6. |  | 18.Stravius Jérémy |   France | 48.62s | 5 | 7. |  | 19.Glenn Surgeloose |   Belgyum | 48.65s | 5 | 5. |  | 20.Kristian Gkolomeev |   Greece | 48.68s | 1 | 5. |  | 21.Andrey Grechin |   Russia | 48.75s | 6 | 7. |  | 22.Federico Grabich |   Argentina | 48.78s | 6 | 8. |  | 23.Dylan Carter |   Trinidad Tobago | 48.80s | 2 | 4. |  | 24.Richárd Bohus |   Hungary | 48.86s | 6 | 4. |  | 25.Yu Hexin |   China | 48.87s | 7 | 6. |  | 26.Dominik Kozma |   Hungary | 48.92s | 4 | 4. |  | 27.Shinri Shioura |   Japan | 48.94s | 7 | 7. |  |  below Olympic Qualifyng Time 48.99s. |  | 28.Nicolas Oliveira |   Brazil | 49.05s | 7 | 8. |  | 29.Benjamin Proud |   Great Britain | 49.14s | 1 | 7. |  | 30.Simonas Bilis |   Lithuania | 49.16s | 4 | 5. |  | 31.Oussama Sahnoune |   Algeria | 49.20s | 4 | 3. |  | 32.Park Tae-hwan |   South Korea | 49.24s | 3 | 4. |  | 32.Velimir Stjepanović |   Serbia | 49.24s | 1 | 8. |  | 34.Cristian Quintero |   Venezuela | 49.25s | 1 | 4. |  | 35.Yauhen Tsurkin |   Belarus | 49.37s | 5 | 4. |  | 36.Anže Tavčar |   Slovenia | 49.38s | 8 | 5. |  | 37.Filippo Magnini |   Italy | 49.40s | 7 | 5. |  | 38.Marius Radu |   Romania | 49.57s | 2 | 5. |  | 39.Björn Hornikel |   Germany | 49.62s | 3 | 5. |  | 40.Shane Ryan |   Ireland | 49.82s | 2 | 3. |  | 41.Aleksandar Nikolov |   Bulgaria | 50.08s | 3 | 3. |  | 42.Ari-Pekka Liukkonen |   Finland | 50.14s | 7 | 4. |  | 42.Matthew Stanley |   New Zealand | 50.14s | 8 | 4. |  | 44.Benjamin Hockin |   Paraguay | 50.26s | 5 | 3. |  | 45.Igor Mogne |   Mozambique | 50.65s | 6 | 2. |  | 45.Ziv Kalontarov |   Israel | 50.65s | 6 | 3. |  |  below Olympic Selection Time (OST) 50.70s. |  | 47.Raphaël Stacchiotti |   Luxembourg | 50.79s | 8 | 3. |  | 48.Sean Gunn |   Zimbabwe | 50.87s | 5 | 2. |  | 49.Bradley Vincent |   Mauritius | 50.89s | 7 | 3. |  | 50.Matthew Abeysinghe | Sri Lanka | 50.96s | 4 | 2. |  | 51.Andrew Chetcuti | Malta | 51.37s | 3 | 2. |  | 52.Jhonny Pérez |   Dominicana | 51.50s | 4 | 1. |  | 53.Nicholas Magana |   Peru | 51.53s | 1 | 3. |  | 54.Thibaut Amani Danho |   Ivory Coast | 52.78s | 3 | 1. |  | 55.Miguel Mena |   Nicaragua | 53.40s | 2 | 2. |  | 56.Rami Anis | Refugee Olympic Team | 54.35s | 1 | 2. |  | 57.Pou Sovijja | Cambodia | 54.55s | 7 | 2. |  | 58.Sirish Gurung |   Nepal | 57.76s | 8 | 2. |  | 59.Robel Kiros Habte |   Ethiopia | 1:04.95 | 5 | 1. |   
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| Olympic Qualifyng Time (OQT) 48.99s - NOC can enter up to 2 swimmers with OQT. |  | Olympic Selection Time (OST) 50.70s, invitational - A swwimer meeting the "invitation" standard was eligible for entry. But this entry was allotted/filled by ranking.  |   
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|  Olympic Qualifyng Time by NOC - 38 Swimmers - addtional 21 Swimmers. |  |  Olympic Qualifying Time – 48.99s |  |  2 Quotas - 14 NOC |  | 2 |  Australia | Kyle Chalmers | Cameron McEvoy |  | 2 |  Belgium | Glenn Surgeloose | Pieter Timmers |  | 2 |  Brazil | Marcelo Chierighini | Nicolas Oliveira |  | 2 |  Canada | Santo Condorelli | Yuri Kisil |  | 2 |  China | Ning Zetao | Yu Hexin |  | 2 |  France | Clément Mignon | Stravius Jérémy |  | 2 |  Germany | Björn Hornikel | Damian Wierling |  | 2 |  Great_Britain | Benjamin Proud | Duncan Scott |  | 2 |  Hungary | Richárd Bohus | Dominik Kozma |  | 2 |  Italy | Luca Dotto | Filippo Magnini |  | 2 |  Japan | Katsumi Nakamura | Shinri Shioura |  | 2 |  Poland | Konrad Czerniak | Paweł Korzeniewski |  | 2 |  Russia | Andrey Grechin | Vladimir Morozov |  | 2 |  United_States | Nathan Adrian | Caeleb Dressel |  |  1 Quota - 10 NOC |  | 1 |  Argentina | Federico Grabich |  | 1 |  Belarus | Yauhen Tsurkin |  | 1 |  Greece | Kristian Golomeev |  | 1 |  Lithuania | Simonas Bilis |  | 1 |  Netherlands | Sebastiaan Verschuren |  | 1 |  Romania | Marius Radu |  | 1 |  Serbia | Velimir Stjepanović |  | 1 |  Singapore | Joseph Schooling |  | 1 |  Slovenia | Anže Tavčar |  | 1 |  South_Korea | Park Tae-hwan |  |  Olympic Selection Time – 50.70 - 12 NOC |  | 1 |  Bulgaria | Aleksandar Nikolov | [b] |  | 1 |  Finland | Ari-Pekka Liukkonen | [Men 50m Freestyle] |  | 1 |  Ireland | Shane Ryan | [Men 100m Backstroke] |  | 1 |  Israel | Ziv Kalontorov | [a] |  | 1 |  Luxembourg | Raphaël Stacchiotti | [b] |  | 1 |  Mauritius | Bradley Vincent | [b] |  | 1 |  New_Zealand | Matthew Stanley | [Men 200m Freestyle] |  | 1 |  Paraguay | Benjamin Hockin | [b] |  | 1 |  Peru | Nicholás Magana | [b] |  | 1 |  Sri Lanka | Matthew Abeysinghe | [b] |  | 1 |  Trinidad Tobago | Dylan Carter |  | 1 |  Venezuela | Cristian Quintero | [Men 200m Freestyle] |  |  Universalitiy Places - 9 NOC |  | 1 |  Cambodia | Pou Sovijja |  | 1 |  Ivory Coast | Thibaut Danho |  | 1 |  Dominican Republic | Jhonny Peréz |  | 1 |  Ethiopia | Robel Habte |  | 1 |  Malta | Andrew Chetcuti |  | 1 |  Mozambique | Igor Mogne |  | 1 |  Nepal | Shirish Gurung |  | 1 |  Nicaragua | Miguel Mena |  | 1 |  Zimbabwe | Sean Gunn |  | 59 | Total |   
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