| | Event type

50 metres Breaststroke, Boys

Date	11 – 12 October 2018
Status	YOG
Location	Natatorium, Parque Olímpico de la Juventud, Villa Soldati, Buenos Aires
Participants	35 from 32 countries

Pos	Competitor	NOC	R1	SF	Final
1	Michael Houlie	RSA	27.99 (1 h4)	27.33 (1 h1)	27.51 (1)	Gold
2	Sun Jiajun	CHN	27.91 (1 h5)	28.05 (1 h2)	27.85 (2)	Silver
3	Alexander Milanovich	CAN	28.46 (3 h5)	28.19 (2 h2)	27.87 (3)	Bronze
4	Taku Taniguchi	JPN	28.28 (1 h3)	28.22 (3 h2)	28.20 (4)
5	Vitor de Souza	BRA	29.16 (4 h3)	28.53 (6 h2)	28.24 (5)
6	Vladislav Gerasimenko	RUS	29.03 (6 h4)	28.43 (4 h2)	28.36 (6)
=7	Caspar Corbeau	NED	28.90 (3 h4)	28.44 (5 h2)	28.70 (=7)
=7	Denis Petrashov	KGZ	28.43 (2 h5)	28.62 (2 h1)	28.70 (=7)
9	Santiago Saint-Upery	URU	28.47 (2 h3)	28.76 (3 h1)	–
10	André Klippenberg Grindheim	NOR	28.55 (3 h3)	28.93 (8 h2)	–
11	Juri Dijkstra	NED	28.79 (2 h4)	28.77 (4 h1)	–
12	Andrés Puente	MEX	28.95 (4 h4)	28.97 (5 h1)	–
13	Didzis Rudavs	LAT	28.98 (4 h5)	28.89 (7 h2)	–
14	Izaak Bastian	BAH	29.01 (5 h4)	29.35 (8 h1)	–
15	Samy Boutouil	MAR	29.12 (5 h5)	29.10 (7 h1)	–
16	Yu Hanaguruma	JPN	29.18 (6 h5)	29.01 (6 h1)	–
17	Aleksey Sidorchuk	UZB	29.24 (7 h5)	–	–
18	Demirkan Demir	TUR	29.25 (1 h2)	–	–
19	Moncef Balamane	ALG	29.30 (2 h2)	–	–
20	Jan Kałusowski	POL	29.40 (5 h3)	–	–
21	Ethan Dang	USA	29.50 (6 h3)	–	–
22	Sebestyén Böhm	HUN	29.57 (7 h4)	–	–
23	Ahmed Fliyou	MAR	29.59 (7 h3)	–	–
24	Dávid Gajdoš	SVK	29.64 (8 h4)	–	–
25	Samuele Rossi	SEY	29.66 (1 h1)	–	–
26	Amro Al-Wir	JOR	29.71 (3 h2)	–	–
27	Maximillian Ang	SGP	30.09 (8 h3)	–	–
28	Marcus Mok	HKG	30.37 (4 h2)	–	–
29	Simon Greuter	LIE	31.13 (5 h2)	–	–
=30	Leonard Kalate	PNG	31.45 (6 h2)	–	–
=30	Luis Weekes	BAR	31.45 (8 h5)	–	–
32	Daniel Scott	GUY	33.28 (7 h2)	–	–
33	Omar Barry	BUR	41.81 (2 h1)	–	–
34	Andrés Akue	GEQ	44.81 (3 h1)	–	–
DQ	Momodou Saine	GAM	– (DQ h2)	–	–
DNS	Eddie Boyengue	CGO	– (DNS h5)	–	–

Round One

Date	11 October 2018 — 11:16
Format	Top 16 advance to the semi-finals.

Heat #1

Time	11:16

Pos	Competitor	NOC	Time
1	Samuele Rossi	SEY	29.66
2	Omar Barry	BUR	41.81
3	Andrés Akue	GEQ	44.81

Heat #2

Pos	Competitor	NOC	Time
1	Demirkan Demir	TUR	29.25
2	Moncef Balamane	ALG	29.30
3	Amro Al-Wir	JOR	29.71
4	Marcus Mok	HKG	30.37
5	Simon Greuter	LIE	31.13
6	Leonard Kalate	PNG	31.45
7	Daniel Scott	GUY	33.28
DQ	Momodou Saine	GAM	–

Heat #3

Pos	Competitor	NOC	Time
1	Taku Taniguchi	JPN	28.28	Q
2	Santiago Saint-Upery	URU	28.47	Q
3	André Klippenberg Grindheim	NOR	28.55	Q
4	Vitor de Souza	BRA	29.16	Q
5	Jan Kałusowski	POL	29.40
6	Ethan Dang	USA	29.50
7	Ahmed Fliyou	MAR	29.59
8	Maximillian Ang	SGP	30.09

Heat #4

Pos	Competitor	NOC	Time
1	Michael Houlie	RSA	27.99	Q
2	Juri Dijkstra	NED	28.79	Q
3	Caspar Corbeau	NED	28.90	Q
4	Andrés Puente	MEX	28.95	Q
5	Izaak Bastian	BAH	29.01	Q
6	Vladislav Gerasimenko	RUS	29.03	Q
7	Sebestyén Böhm	HUN	29.57
8	Dávid Gajdoš	SVK	29.64

Heat #5

Pos	Competitor	NOC	Time
1	Sun Jiajun	CHN	27.91	Q
2	Denis Petrashov	KGZ	28.43	Q
3	Alexander Milanovich	CAN	28.46	Q
4	Didzis Rudavs	LAT	28.98	Q
5	Samy Boutouil	MAR	29.12	Q
6	Yu Hanaguruma	JPN	29.18	Q
7	Aleksey Sidorchuk	UZB	29.24
8	Luis Weekes	BAR	31.45
DNS	Eddie Boyengue	CGO	–

Semi-Finals

Date	11 October 2018 — 18:58
Format	Top 8 advance to the final round.

Heat #1

Time	18:58

Pos	Competitor	NOC	Time
1	Michael Houlie	RSA	27.33	Q
2	Denis Petrashov	KGZ	28.62	Q
3	Santiago Saint-Upery	URU	28.76
4	Juri Dijkstra	NED	28.77
5	Andrés Puente	MEX	28.97
6	Yu Hanaguruma	JPN	29.01
7	Samy Boutouil	MAR	29.10
8	Izaak Bastian	BAH	29.35

Heat #2

Pos	Competitor	NOC	Time
1	Sun Jiajun	CHN	28.05	Q
2	Alexander Milanovich	CAN	28.19	Q
3	Taku Taniguchi	JPN	28.22	Q
4	Vladislav Gerasimenko	RUS	28.43	Q
5	Caspar Corbeau	NED	28.44	Q
6	Vitor de Souza	BRA	28.53	Q
7	Didzis Rudavs	LAT	28.89
8	André Klippenberg Grindheim	NOR	28.93

Final Round

Date	12 October 2018 — 19:29

Pos	Competitor	NOC	Time
1	Michael Houlie	RSA	27.51
2	Sun Jiajun	CHN	27.85
3	Alexander Milanovich	CAN	27.87
4	Taku Taniguchi	JPN	28.20
5	Vitor de Souza	BRA	28.24
6	Vladislav Gerasimenko	RUS	28.36
=7	Caspar Corbeau	NED	28.70
=7	Denis Petrashov	KGZ	28.70