| Final 11:12 | time | gap | L | Reac | 50m |  | 1. Adam Peaty |   Great Britain | 57.37s |   | 4 | 0.62 | 26.73s4. |  | 2. Arno Kamminga |   Netherlands | 58.00s | 0.63s | 5 | 0.62 | 27.04s5. |  | 3. Nicolo Martinenghi |   Italy | 58.33s | 0.96s | 3 | 0.60 | 27.27s3. |  | 4. Michael Andrew |   United States | 58.84s | 1.47s | 2 | 0.63 | 27.24s2. |  | 5. James Wilby |   Great Britain | 58.96s | 1.59s | 7 | 0.65 | 27.53s7. |  | 6. Zibei Yan |   China | 58.99s | 1.62s | 6 | 0.64 | 27.44s6. |  | 6. Andrew Wilson |   United States | 58.99s | 1.62s | 8 | 0.62 | 27.83s8. |  | 8. Ilya Shymanovich |   Belarus | 59.36s | 1.99s | 1 | 0.63 | 27.10s1. |   
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| World Record: Adam Peaty, Great Britain 56.88s Gwanju, South Korea 21st July 2019 |  | Olympic Record: Adam Peaty, Great Britain 57.13s Rio de Janeiro, Brazil 7th August 2016 |   
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  |  | Best 8 times advanced to Final.  |   
| Semi 1 |   | time | gap | L | pts | 50m | age |  | 2. Arno Kamminga |   Netherlands | 58.19s | +0.56s | 4 | 933 | 27.20s | 25 |  | 3. Nicolo Martinenghi |   Italy | 58.28s | +0.65s | 5 | 929 | 27.38s | 21 |  | 6. James Wilby |   Great Britain | 59.00s | +1.37s | 3 | 896 | 27.86s | 27 |  | 10.Fabian Schwingenschlogl |   Germany | 59.32s | +1.69s | 1 | 881 | 27.50s | 29 |  | 11.Kirill Prigoda |   ROC | 59.44s | +1.81s | 8 | 876 | 27.95s | 25 |  | 12.Felipe Lima |   Brazil | 59.80s | +2.17s | 6 | 860 | 27.47s | 36 |  | 13.Ryuya Mura |   Japan | 59.82s | +2.19s | 7 | 859 | 28.26s | 25 |  | 15.Federico Poggio |   Italy | 59.91s | +2.28s | 2 | 855 | 28.25s | 23 |   
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| Semi 2 |   | time | gap | L | pts | 50m | age |  | 1. Adam Peaty |   Great Britain | 57.63s | - | 4 | 961 | 26.65s | 26 |  | 4. Zibei Yan |   China | 58.72s | +1.09s | 3 | 908 | 27.45s | 25 |  | 5. Michael Andrew |   United States | 58.99s | +1.36s | 5 | 896 | 27.24s | 22 |  | 7. Ilya Shymanovich |   Belarus | 59.08s | +1.45s | 2 | 892 | 27.04s | 26 |  | 8. Andrew Wilson |   United States | 59.18s | +1.55s | 6 | 887 | 27.73s | 27 |  | 9. Lucas Matzerath |   Germany | 59.31s | +1.68s | 7 | 882 | 27.83s | 21 |  | 13.Andrius Sidlauskas |   Lithuania | 59.82s | +2.19s | 1 | 859 | 27.80s | 24 |  | 16.Anton Chupkov |   ROC | 59.93s | +2.30s | 8 | 854 | 28.43s | 24 |   
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| 1. Adam Peaty |   Great Britain | 57.56s | - | 4 | 964 | 26.81s | 26 |  | 4. Nicolo Martinenghi |   Italy | 58.68s | +1.12s | 5 | 910 | 27.77s | 21 |  | 5. Zibei Yan |   China | 58.75s | +1.19s | 3 | 907 | 27.59s | 25 |  | 8. Felipe Lima |   Brazil | 59.17s | +1.61s | 8 | 888 | 27.41s | 36 |  | 9. Federico Poggio |   Italy | 59.33s | +1.77s | 1 | 881 | 27.90s | 23 |  | 18.Berkay Ogretir |   Turkey | 59.82s | +2.26s | 7 | 859 | 27.85s | 23 |  | 21.Matti Mattsson |   Finland | 1:00.02 | +2.46s | 5 | 851 | 28.46s | 27 |  | 23.Shoma Sato |   Japan | 1:00.04 | +2.48s | 7 | 850 | 28.30s | 20 |   
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| Heat 6 |   | time | gap | L | pts | 50m | age |  | 2. Arno Kamminga |   Netherlands | 57.80s | +0.24s | 4 | 953 | 27.14s | 25 |  | 7. Andrew Wilson |   United States | 59.03s | +1.47s | 3 | 894 | 27.94s | 27 |  | 9. Ilya Shymanovich |   Belarus | 59.33s | +1.77s | 5 | 881 | 27.37s | 26 |  | 11.Ryuya Mura |   Japan | 59.40s | +1.84s | 8 | 878 | 28.25s | 25 |  | 14.Fabian Schwingenschlogl |   Germany | 59.49s | +1.93s | 6 | 874 | 27.88s | 29 |  | 16.Kirill Prigoda |   ROC | 59.68s | +2.12s | 2 | 865 | 27.81s | 25 |  | 20.Sung Jae Cho |   South Korea | 59.99s | +2.43s | 5 | 852 | 28.39s | 20 |  | 22.Matthew Wilson |   Australia | 1:00.03 | +2.47s | 2 | 850 | 28.02s | 18 |  | 26.Caba Siladi |   Serbia | 1:00.19 | +2.63s | 1 | 843 | 27.59s | 30 |   
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| Heat 5 |   | time | gap | L | pts | 50m | age |  | 3. Michael Andrew |   United States | 58.62s | +1.06s | 4 | 913 | 27.27s | 22 |  | 6. James Wilby |   Great Britain | 58.99s | +1.43s | 5 | 896 | 27.47s | 27 |  | 11.Lucas Matzerath |   Germany | 59.40s | +1.84s | 1 | 878 | 27.68s | 21 |  | 13.Andrius Sidlauskas |   Lithuania | 59.46s | +1.90s | 7 | 875 | 27.85s | 24 |  | 15.Anton Chupkov |   ROC | 59.55s | +1.99s | 3 | 871 | 28.22s | 24 |  | 17.Dmitriy Balandin |   Kazakhstan | 59.75s | +2.19s | 6 | 862 | 27.78s | 26 |  | 19.Emre Sakci |   Turkey | 59.87s | +2.31s | 6 | 857 | 27.36s | 23 |  | 25.Caspar Corbeau |   Netherlands | 1:00.13 | +2.57s | 8 | 846 | 28.06s | 20 |  | -. Amini Fonua |   Tonga | DSQ | - | 5 | - | 29.64s | 31 |   
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| Heat 4 |   | time | gap | L | pts | 50m | age |  | 24.Zac Stubblety-Cook |   Australia | 1:00.05 | +2.49s | 3 | 849 | 28.89s | 22 |  | 27.Denis Petrashov |   Kirgystan | 1:00.23 | +2.67s | 1 | 842 | 28.41s | 21 |  | 29.Darragh Greene |   Ireland | 1:00.30 | +2.74s | 2 | 839 | 28.36s | 25 |  | 33.Theo Bussiere |   France | 1:00.75 | +3.19s | 7 | 820 | 28.34s | 26 |  | 34.Caio Pumputis |   Brazil | 1:00.76 | +3.20s | 6 | 820 | 28.48s | 22 |  | 36.Giedrius Titenis |   Lithuania | 1:00.92 | +3.36s | 8 | 813 | 27.95s | 32 |  | 37.Michael Houlie |   South Africa | 1:01.22 | +3.66s | 4 | 802 | 27.55s | 21 |   
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| Heat 3 |   | time | gap | L | pts | 50m | age |  | 30.Bernhard Reitshammer |   Austria | 1:00.41 | +2.85s | 4 | 834 | 27.70s | 27 |  | 31.Jorge Murillo Valdes |   Colombia | 1:00.62 | +3.06s | 7 | 826 | 28.47s | 29 |  | 32.Lyubomir Epitropov |   Bulgaria | 1:00.71 | +3.15s | 2 | 822 | 28.72s | 22 |  | 35.Andre Grindheim |   Norway | 1:00.86 | +3.30s | 6 | 816 | 27.88s | 21 |  | 38.Gabe Mastromatteo |   Canada | 1:01.56 | +4.00s | 3 | 788 | 28.27s | 19 |  | 39.Josue Dominguez Ramos |   Dominicana | 1:01.86 | +4.30s | 1 | 777 | 28.32s | 24 |  | 40.Izaak Bastian |   Bahamas | 1:01.87 | +4.31s | 8 | 777 | 28.86s | 20 |   
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| Heat 2 |   | time | gap | L | pts | 50m | age |  | 28.Jeremy Desplanches |   Switzerland | 1:00.29 | +2.73s | 4 | 839 | 28.29s | 26 |  | 41.Amro Al-Wir |   Jordan | 1:02.17 | +4.61s | 6 | 765 | 29.23s | 20 |  | 42.Adriel Sanes |   US Virgin Islands | 1:02.43 | +4.87s | 3 | 756 | 28.73s | 22 |  | 43.Julio Horrego |   Honduras | 1:02.45 | +4.89s | 5 | 755 | 29.09s | 22 |  | 44.Sebastien Kouma |   Mali | 1:02.84 | +5.28s | 2 | 741 | 28.79s | 24 |  | 45.Abobakr Abass |   Sudan | 1:04.46 | +6.90s | 7 | 687 | 30.47s | 22 |   
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| Heat 1 |   | time | gap | L | pts | 50m | age |  | 46.Micah Masei |   American Samoa | 1:04.93 | +7.37s | 4 | 672 | 29.23s | 22 |  | 47.Muhammad Isa Ahmad |   Brunei | 1:08.65 | +11.09s | 3 | 568 | 30.66s | 23 |  | -. Tobias Bjerg |   Denmark | DSQ | - | 2 | - | 27.94s | 23 |   
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| Final Ranking | Heats | Semi | Final |  | 1. Adam Peaty |   Great Britain | 57.56s1. | 57.631. | 57.37s |  | 2. Arno Kamminga |   Netherlands | 57.80s2. | 58.192. | 58.00s |  | 3. Nicolo Martinenghi |   Italy | 58.68s4. | 58.283. | 58.33s |  | 4. Michael Andrew |   United States | 58.62s3. | 58.995. | 58.84s |  | 5. James Wilby |   Great Britain | 58.99s6. | 59.006. | 58.96s |  | 6. Zibei Yan |   China | 58.75s5. | 58.724. | 58.99s |  | 6. Andrew Wilson |   United States | 59.03s7. | 59.188. | 58.99s |  | 8. Ilya Shymanovich |   Belarus | 59.33s=9. | 59.087. | 59.36s |  |  eliminated in Semifinals. |  | 9. Lucas Joachim Matzerath |   Germany | 59.40s=11. | 59.31s9. |   |  | 10.Fabian Schwingenschlogl |   Germany | 59.49s14. | 59.32s10. |   |  | 11.Kirill Prigoda |   ROC | 59.68s16. | 59.44s11. |   |  | 12.Felipe Lima |   Brazil | 59.17s8. | 59.80s12. |   |  | 13.Ryuya Mura |   Japan | 59.40s=11. | 59.82s13. |   |  | 13.Andrius Sidlauskas |   Lithuania | 59.46s13. | 59.82s13. |   |  | 15.Federico Poggio |   Italy | 59.33s=9. | 59.91s15. |   |  | 16.Anton Chupkov |   ROC | 59.55s15. | 59.93s16. |   |  | 17.Dmitriy Balandin |   Kazakhstan | 59.75s |   |   |  | 18.Berkay Ogretir |   Turkey | 59.82s |   |   |  | 19.Huseyin Sakci |   Turkey | 59.87s |   |   |  | 20.Sungjae Cho |   South Korea | 59.99s |   |   |  | 21.Matti Mattsson |   Finland | 1:00.02 |   |   |  | 22.Matthew Wilson |   Australia | 1:00.03 |   |   |  | 23.Shoma Sato |   Japan | 1:00.04 |   |   |  | 24.Izaac Stubblety-Cook |   Australia | 1:00.05 |   |   |  | 25.Caspar Corbeau |   Netherlands | 1:00.13 |   |   |  | 26.Caba Siladi |   Serbia | 1:00.19 |   |   |  | 27.Denis Petrashov |   Kyrgyzstan | 1:00.23 |   |   |  | 28.Jeremy Desplanches |   Switzerland | 1:00.29 |   |   |  | 29.Darragh Greene |   Ireland | 1:00.30 |   |   |  | 30.Bernhard Reitshammer |   Austria | 1:00.41 |   |   |  | 31.Jorge Murillo Valdes |   Colombia | 1:00.62 |   |   |  | 32.Lyubomir Epitropov |   Bulgaria | 1:00.71 |   |   |  | 33.Theo Bussiere |   France | 1:00.75 |   |   |  | 34.Caio Pumputis |   Brazil | 1:00.76 |   |   |  | 35.Grindheim Ak |   Norway | 1:00.86 |   |   |  | 36.Giedrius Titenis |   Lithuania | 1:00.92 |   |   |  | 37.Michael Houlie |   South Africa | 1:01.22 |   |   |  | 38.Gabe Mastromatteo |   Canada | 1:01.56 |   |   |  | 39.Josue Dominguez Ramos |   Dominicana | 1:01.86 |   |   |  | 40.Izaak Bastian |   Bahamas | 1:01.87 |   |   |  | 41.Amro Al-Wir |   Jordan | 1:02.17 |   |   |  | 42.Adriel Sanes |   US Virgin Islands | 1:02.43 |   |   |  | 43.Julio Horrego |   Honduras | 1:02.45 |   |   |  | 44.Sebastien Kouma |   Mali | 1:02.84 |   |   |  | 45.Abobakr Abass |   Sudan | 1:04.46 |   |   |  | 46.Micah Masei |   American Samoa | 1:04.93 |   |   |  | 47.Muhammad Isa Ahmad |   Brunei | 1:08.65 |   |   |  | 48.Amini Fonua |   Tonga | DSQ |   |   |  | 48.Tobias Bjerg |   Denmark | DSQ |   |   |   
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| Total eligible to participate -- swimmers (started --) |   
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