# Swimming at the 2017 Summer Universiade – Men's 100 metre breaststroke

The Men's 100 metre breaststroke competition at the 2017 Summer Universiade was held on 20 and 21 August 2017.

## Records

Prior to the competition, the existing world and Universiade records were as follows.
| World record | Adam Peaty (GBR) | 57.13 | Rio de Janeiro, Brazil | 7 August 2016 |
| Competition record | Ihor Borysyk (UKR) | 59.53 | Belgrade, Serbia | 6 July 2009 |

## Results
### Heats

The heats were held on 20 August at 10:28.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 8 | 4 | Andrew Wilson | United States | 59.69 | Q |
| 2 | 9 | 6 | Yannick Käser | Switzerland | 1:00.47 | Q |
| 3 | 9 | 2 | Rustam Gadirov | Russia | 1:00.61 | Q |
| 4 | 7 | 4 | Ilya Shymanovich | Belarus | 1:00.62 | Q |
| 5 | 9 | 4 | Dmitriy Balandin | Kazakhstan | 1:00.76 | Q |
| 6 | 9 | 8 | Ryuya Mura | Japan | 1:01.12 | Q |
| 7 | 8 | 5 | Marcin Stolarski | Poland | 1:01.22 | Q |
| 8 | 6 | 5 | Elijah Wall | Canada | 1:01.27 | Q |
| 9 | 7 | 5 | Andrius Šidlauskas | Lithuania | 1:01.29 | Q |
| 10 | 8 | 3 | Raphael Rodrigues | Brazil | 1:01.32 | Q |
| 11 | 9 | 7 | Andrea Toniato | Italy | 1:01.34 | Q |
| 12 | 9 | 3 | Jacob Montague | United States | 1:01.36 | Q |
| 13 | 8 | 6 | Mamoru Mori | Japan | 1:01.43 | Q |
| 14 | 8 | 1 | Kim Jae-youn | South Korea | 1:01.47 | Q |
| 15 | 6 | 2 | Darragh Greene | Ireland | 1:01.56 | Q |
| 16 | 9 | 1 | Felipe Monni | Brazil | 1:01.67 | Q |
| 17 | 7 | 3 | Jorge Murillo | Colombia | 1:01.70 | |
| 18 | 7 | 2 | Nicholas Quinn | Ireland | 1:01.79 | |
| 19 | 8 | 7 | Mikhail Dorinov | Russia | 1:01.80 | |
| 20 | 7 | 7 | Federico Poggio | Italy | 1:01.83 | |
| 21 | 7 | 6 | Johannes Skagius | Sweden | 1:01.94 | |
| 22 | 8 | 2 | Maximilian Pilger | Germany | 1:02.07 | |
| 23 | 5 | 7 | Alaric Basson | South Africa | 1:02.22 | |
| 24 | 8 | 8 | Mauro Castillo | Mexico | 1:02.35 | |
| 25 | 6 | 7 | Tomáš Klobučník | Slovakia | 1:02.37 | |
| 26 | 5 | 1 | Alex Milligan | Australia | 1:02.38 | |
| 27 | 9 | 5 | Fabian Schwingenschlögl | Germany | 1:02.45 | |
| 27 | 4 | 7 | Chao Man Hou | Macau | 1:02.48 | |
| 29 | 5 | 2 | Miikka Ruohoniemi | Finland | 1:02.56 | |
| 30 | 6 | 1 | George Schroder | New Zealand | 1:02.58 | |
| 31 | 7 | 1 | Itay Goldfaden | Israel | 1:02.66 | |
| 32 | 7 | 8 | Johannes Dietrich | Austria | 1:02.79 | |
| 33 | 6 | 3 | Lee Hsuan-yen | Chinese Taipei | 1:02.84 | |
| 34 | 6 | 4 | Jolann Bovey | Switzerland | 1:02.85 | |
| 35 | 4 | 4 | Teemu Vuorela | Finland | 1:02.97 | |
| 36 | 6 | 6 | Oleksandr Karpenko | Ukraine | 1:03.19 | |
| 37 | 5 | 4 | Daniils Bobrovs | Latvia | 1:03.21 | |
| 38 | 4 | 6 | Antoine Viquerat | France | 1:03.35 | |
| 39 | 5 | 3 | Jacob Garrod | New Zealand | 1:03.48 | |
| 40 | 6 | 8 | Aibek Kamzenov | Kazakhstan | 1:03.51 | |
| 41 | 5 | 8 | Gabriel Morelli | Argentina | 1:03.65 | |
| 42 | 4 | 5 | Shin Hyeong-keun | South Korea | 1:03.80 | |
| 43 | 5 | 6 | Nikolajs Maskaļenko | Latvia | 1:03.87 | |
| 44 | 4 | 3 | Kwok Ka Fai | Hong Kong | 1:03.93 | |
| 45 | 5 | 5 | Hsu Han-peng | Chinese Taipei | 1:03.95 | |
| 46 | 4 | 2 | Joaquin Serra | Argentina | 1:04.12 | |
| 47 | 4 | 1 | Gerdi Zulfitranto | Indonesia | 1:04.43 | |
| 48 | 3 | 6 | Ayrton Kasemets | Estonia | 1:05.25 | |
| 49 | 3 | 5 | Chen Hongrui | China | 1:06.05 | |
| 50 | 3 | 4 | Kenneth Lim | Singapore | 1:06.07 | |
| 51 | 4 | 8 | Wong Ho Kiu | Hong Kong | 1:06.79 | |
| 52 | 3 | 3 | José Gálvez | Chile | 1:06.85 | |
| 53 | 3 | 1 | Felipe Quiroz | Chile | 1:07.67 | |
| 54 | 2 | 5 | Zandanbal Gunsennorov | Mongolia | 1:08.39 | |
| 55 | 2 | 4 | Maksim Akavantsev | Estonia | 1:09.42 | |
| 56 | 3 | 7 | Alejandro López | Costa Rica | 1:09.71 | |
| 57 | 3 | 8 | Anthony Souaiby | Lebanon | 1:09.82 | |
| 58 | 2 | 6 | Daniel Tung | Singapore | 1:10.87 | |
| 59 | 3 | 2 | Drew Magbag | Philippines | 1:11.39 | |
| 60 | 2 | 2 | Rodrigo Guerra | Nicaragua | 1:12.31 | |
| 61 | 2 | 7 | Taveesh Edussuriya | Sri Lanka | 1:15.13 | |
| 62 | 1 | 3 | Daisuke Ssegwanyi | Uganda | 1:17.21 | |
| 63 | 1 | 6 | Ruben Frio | Mozambique | 1:17.22 | |
| 64 | 2 | 8 | Sameera Vithanage | Sri Lanka | 1:23.91 | |
| 65 | 1 | 4 | Salim Al-Masroori | Oman | 1:25.27 | |
| | 1 | 5 | Mohammed Al-Habsi | Oman | DSQ | |
| | 2 | 1 | Sunday Nwabogor | Nigeria | DNS | |
| | 2 | 3 | Forsight Osamezu | Nigeria | DNS | |

### Semifinals

The semifinals were held on 20 August at 19:41.

#### Semifinal 1

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | Yannick Käser | Switzerland | 1:00.53 | Q |
| 2 | 5 | Ilya Shymanovich | Belarus | 1:00.65 | Q |
| 3 | 7 | Jacob Montague | United States | 1:00.97 | Q |
| 4 | 3 | Ryuya Mura | Japan | 1:01.37 | |
| 5 | 6 | Elijah Wall | Canada | 1:01.48 | |
| 6 | 1 | Kim Jae-youn | South Korea | 1:01.54 | |
| 7 | 8 | Felipe Monni | Brazil | 1:01.60 | |
| 8 | 2 | Raphael Rodrigues | Brazil | 1:01.75 | |

#### Semifinal 2

| Rank | Lane | Name | Nationality | Time | Notes |
| 1 | 3 | Dmitriy Balandin | Kazakhstan | 1:00.27 | Q |
| 2 | 4 | Andrew Wilson | United States | 1:00.49 | Q |
| 3 | 5 | Rustam Gadirov | Russia | 1:00.66 | Q |
| 4 | 2 | Andrius Šidlauskas | Lithuania | 1:01.05 | Q |
| 5 | 6 | Marcin Stolarski | Poland | 1:01.14 | Q |
| 6 | 1 | Mamoru Mori | Japan | 1:01.36 | |
| 7 | 8 | Darragh Greene | Ireland | 1:01.89 | |
| 8 | 7 | Andrea Toniato | Italy | 1:01.92 | |

### Final

The final was held on 21 August at 19:34.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 6 | Ilya Shymanovich | Belarus | 1:00.15 | |
| | 5 | Andrew Wilson | United States | 1:00.15 | |
| | 4 | Dmitriy Balandin | Kazakhstan | 1:00.17 | |
| 4 | 3 | Yannick Käser | Switzerland | 1:00.35 | NR |
| 5 | 2 | Rustam Gadirov | Russia | 1:00.68 | |
| 6 | 7 | Jacob Montague | United States | 1:00.93 | |
| 7 | 1 | Andrius Šidlauskas | Lithuania | 1:00.95 | |
| 8 | 8 | Marcin Stolarski | Poland | 1:01.30 | |