| | Event type

100 metres Butterfly, Boys

Date	16 – 17 August 2010
Status	YOG
Location	Singapore Sports School, Singapore
Participants	36 from 31 countries

Pos	Swimmer	NOC	R1	SF	Final
1	Jang Gyu-Cheol	KOR	54.66 (2 h5)	53.41 (1 h2)	53.13 (1)	Gold
2	Chad le Clos	RSA	54.93 (3 h5)	53.67 (1 h1)	53.31 (2)	Silver
3	Velimir Stjepanović	SRB	54.71 (1 h4)	54.00 (2 h1)	53.77 (3)	Bronze
4	Marcin Cieślak	POL	54.64 (3 h3)	54.30 (5 h1)	53.78 (4)
5	Jordan Coelho	FRA	54.19 (2 h3)	54.11 (4 h1)	53.96 (5)
6	Bence Biczó	HUN	54.76 (3 h4)	54.03 (3 h1)	53.99 (6)
7	Mehdy Metella	FRA	54.81 (4 h4)	54.30 (3 h2)	54.35 (7)
8	Erich Peske	USA	54.50 (1 h5)	54.29 (2 h2)	54.93 (8)
9	Tommaso Romani	ITA	55.10 (4 h5)	54.35 (4 h2)	–
10	Kenneth To	AUS	54.16 (1 h3)	54.36 (5 h2)	–
11	Hoàng Quý Phước	VIE	54.74 (2 h4)	54.71 (6 h2)	–
12	Sun Bowei	CHN	55.30 (5 h3)	54.73 (7 h2)	–
13	Cadell Lyons	TTO	55.54 (5 h5)	54.88 (6 h1)	–
14	Yoo Kyu-Sang	KOR	55.58 (5 h4)	55.16 (8 h2)	–
15	Melvin Herrmann	GER	55.65 (6 h3)	55.19 (7 h1)	–
16	Roberto Strelkov	ARG	55.15 (4 h3)	55.20 (8 h1)	–
17	Justin James	AUS	55.70 (7 h3)	–	–
18	Ilya Lemayev	RUS	55.77 (6 h4)	–	–
19	Jun Isaji	JPN	55.88 (6 h5)	–	–
20	Thomas Jobin	CAN	56.80 (7 h4)	–	–
21	Rainer Ng	SGP	57.06 (8 h4)	–	–
22	Pang Sheng Jun	SGP	57.08 (7 h5)	–	–
23	Ondřej Palatka	CZE	57.41 (8 h5)	–	–
24	Zlatko Alić	BIH	57.46 (1 h2)	–	–
25	Serghei Golban	MDA	57.81 (2 h2)	–	–
26	Ahmadreza Jalali	IRI	57.84 (3 h2)	–	–
27	Homayoun Haghighijadid	IRI	58.34 (4 h2)	–	–
28	Juan Manuel Arbeláez	COL	58.37 (8 h3)	–	–
29	Sofyan El-Gadi	LBA	59.07 (5 h2)	–	–
30	Omar Alyan	JOR	59.39 (6 h2)	–	–
31	Mohamed Juwel Ahmed	BAN	1:02.97 (7 h2)	–	–
32	Mamitina Ramantsoa Tsilavina	MAD	1:06.88 (1 h1)	–	–
33	Cristofer Jiménez	NCA	1:07.64 (2 h1)	–	–
34	Ham Sserunjogi	UGA	1:11.23 (3 h1)	–	–
35	Jeremy Joint Riong	BRU	1:11.27 (8 h2)	–	–
36	Ralph Quaye	GHA	1:17.03 (4 h1)	–	–

Round One (16 August 2010 — 10:14)

Top 16 times advanced to semi-finals.

Heat #1 (10:14)

Pos	Lane	Swimmer	NOC	Time
1	–	Mamitina Ramantsoa Tsilavina	MAD	– (–) –	1:06.88
2	–	Cristofer Jiménez	NCA	– (–) –	1:07.64
3	–	Ham Sserunjogi	UGA	– (–) –	1:11.23
4	–	Ralph Quaye	GHA	– (–) –	1:17.03

Heat #2

Pos	Lane	Swimmer	NOC	Time
1	–	Zlatko Alić	BIH	– (–) –	57.46
2	–	Serghei Golban	MDA	– (–) –	57.81
3	–	Ahmadreza Jalali	IRI	– (–) –	57.84
4	–	Homayoun Haghighijadid	IRI	– (–) –	58.34
5	–	Sofyan El-Gadi	LBA	– (–) –	59.07
6	–	Omar Alyan	JOR	– (–) –	59.39
7	–	Mohamed Juwel Ahmed	BAN	– (–) –	1:02.97
8	–	Jeremy Joint Riong	BRU	– (–) –	1:11.27

Heat #3

Pos	Lane	Swimmer	NOC	Time
1	–	Kenneth To	AUS	– (–) –	54.16	Q
2	–	Jordan Coelho	FRA	– (–) –	54.19	Q
3	–	Marcin Cieślak	POL	– (–) –	54.64	Q
4	–	Roberto Strelkov	ARG	– (–) –	55.15	Q
5	–	Sun Bowei	CHN	– (–) –	55.30	Q
6	–	Melvin Herrmann	GER	– (–) –	55.65	Q
7	–	Justin James	AUS	– (–) –	55.70
8	–	Juan Manuel Arbeláez	COL	– (–) –	58.37

Heat #4

Pos	Lane	Swimmer	NOC	Time
1	–	Velimir Stjepanović	SRB	– (–) –	54.71	Q
2	–	Hoàng Quý Phước	VIE	– (–) –	54.74	Q
3	–	Bence Biczó	HUN	– (–) –	54.76	Q
4	–	Mehdy Metella	FRA	– (–) –	54.81	Q
5	–	Yoo Kyu-Sang	KOR	– (–) –	55.58	Q
6	–	Ilya Lemayev	RUS	– (–) –	55.77
7	–	Thomas Jobin	CAN	– (–) –	56.80
8	–	Rainer Ng	SGP	– (–) –	57.06

Heat #5

Pos	Lane	Swimmer	NOC	Time
1	–	Erich Peske	USA	– (–) –	54.50	Q
2	–	Jang Gyu-Cheol	KOR	– (–) –	54.66	Q
3	–	Chad le Clos	RSA	– (–) –	54.93	Q
4	–	Tommaso Romani	ITA	– (–) –	55.10	Q
5	–	Cadell Lyons	TTO	– (–) –	55.54	Q
6	–	Jun Isaji	JPN	– (–) –	55.88
7	–	Pang Sheng Jun	SGP	– (–) –	57.08
8	–	Ondřej Palatka	CZE	– (–) –	57.41

Semi-Finals (16 August 2010 — 19:14)

Top 8 times advanced to final.

Heat #1 (19:14)

Pos	Lane	Swimmer	NOC	Time
1	–	Chad le Clos	RSA	– (–) –	53.67	Q
2	–	Velimir Stjepanović	SRB	– (–) –	54.00	Q
3	–	Bence Biczó	HUN	– (–) –	54.03	Q
4	–	Jordan Coelho	FRA	– (–) –	54.11	Q
5	–	Marcin Cieślak	POL	– (–) –	54.30	Q
6	–	Cadell Lyons	TTO	– (–) –	54.88
7	–	Melvin Herrmann	GER	– (–) –	55.19
8	–	Roberto Strelkov	ARG	– (–) –	55.20

Heat #2

Pos	Lane	Swimmer	NOC	Time
1	–	Jang Gyu-Cheol	KOR	– (–) –	53.41	Q
2	–	Erich Peske	USA	– (–) –	54.29	Q
3	–	Mehdy Metella	FRA	– (–) –	54.30	Q
4	–	Tommaso Romani	ITA	– (–) –	54.35
5	–	Kenneth To	AUS	– (–) –	54.36
6	–	Hoàng Quý Phước	VIE	– (–) –	54.71
7	–	Sun Bowei	CHN	– (–) –	54.73
8	–	Yoo Kyu-Sang	KOR	– (–) –	55.16

Final Round, Final (17 August 2010 — 18:58)

Pos	Lane	Swimmer	NOC	Time
1	–	Jang Gyu-Cheol	KOR	– (–) –	53.13
2	–	Chad le Clos	RSA	– (–) –	53.31
3	–	Velimir Stjepanović	SRB	– (–) –	53.77
4	–	Marcin Cieślak	POL	– (–) –	53.78
5	–	Jordan Coelho	FRA	– (–) –	53.96
6	–	Bence Biczó	HUN	– (–) –	53.99
7	–	Mehdy Metella	FRA	– (–) –	54.35
8	–	Erich Peske	USA	– (–) –	54.93