The boys' 100 metre breaststroke event at the 2018 Summer Youth Olympics took place on 7 and 8 October at the Natatorium in Buenos Aires, Argentina.
Results Heats The heats were started on 7 October at 11:00.Heats results Rank Heat Lane Name Nationality Time Notes 1 3 5 Michael Houlie 1:01.37 Q 2 4 4 Sun Jiajun 1:01.43 Q 3 3 4 Taku Taniguchi 1:01.68 Q 4 2 5 Yu Hanaguruma 1:02.22 Q 5 2 4 Vladislav Gerasimenko 1:02.46 Q 6 4 3 Jan Kałusowski 1:02.63 Q 7 3 3 Caspar Corbeau 1:02.74 Q 8 4 5 Denis Petrashov 1:02.82 Q 9 2 7 Phạm Thanh Bảo 1:02.99 Q 10 2 3 Vitor de Souza 1:03.18 Q 11 4 7 Sebestyén Böhm 1:03.21 Q 12 4 6 Juri Dijkstra 1:03.53 Q 13 4 8 Santiago Saint-Upery 1:03.55 Q 14 3 7 Demirkan Demir 1:03.68 Q 15 3 1 Moncef Aymen Balamane 1:03.72 Q 16 3 2 André Klippenberg Grindheim 1:03.80 Q 17 3 6 Alexander Milanovich 1:03.88 18 4 1 Jānis Vitauts Siliņš 1:04.06 19 3 8 Maximillian Ang 1:04.24 20 1 4 Aleksey Sidorchuk 1:04.31 21 2 8 Marcus Mok 1:04.46 22 4 2 Andrés Puente 1:04.69 23 2 2 Ethan Dang 1:04.72 24 1 2 Dávid Gajdoš 1:04.87 25 2 1 Didzis Rudavs 1:04.95 26 1 3 Matija Može 1:04.96 27 2 6 Izaak Bastian 1:05.21 28 1 6 Luis Weekes 1:06.27 29 1 5 David Solis 1:06.32 30 1 8 Samuele Rossi 1:07.28 31 1 1 Leonard Kalate 1:07.53 32 1 7 Simon Greuter 1:08.12
Semifinals The semifinals were started on 7 October at 18:38.Semifinals results
Rank Heat Lane Name Nationality Time Notes 1 2 4 Michael Houlie 1:00.23 Q 2 1 4 Sun Jiajun 1:00.61 Q 3 1 6 Denis Petrashov 1:01.95 Q 4 1 5 Yu Hanaguruma 1:01.99 Q 5 2 5 Taku Taniguchi 1:02.08 Q 6 2 3 Vladislav Gerasimenko 1:02.15 Q 7 1 3 Jan Kałusowski 1:02.23 Q 8 2 6 Caspar Corbeau 1:02.29 Q 9 2 2 Phạm Thanh Bảo 1:02.52 10 1 2 Vitor de Souza 1:02.69 11 1 7 Juri Dijkstra 1:03.10 12 2 7 Sebestyén Böhm 1:03.23 13 2 8 Moncef Aymen Balamane 1:03.35 14 1 8 André Klippenberg Grindheim 1:03.65 15 2 1 Santiago Saint-Upery 1:03.84 16 1 1 Demirkan Demir 1:04.05
Final The final was held on 8 October at 19:02.Final results Rank Lane Name Nationality Time Notes 5 Sun Jiajun 1:00.59 3 Denis Petrashov 1:01.34 2 Taku Taniguchi 1:01.40 4 6 Yu Hanaguruma 1:01.62 5 4 Michael Houlie 1:01.70 6 8 Caspar Corbeau 1:01.81 7 7 Vladislav Gerasimenko 1:02.43 8 1 Jan Kałusowski 1:02.69
References