| | Event type

100 metres Butterfly, Women

Date	6 – 7 August 2016
Status	Olympic
Location	Estádio Aquático Olímpico, Parque Olímpico da Barra, Barra da Tijuca, Rio de Janeiro
Participants	45 from 35 countries

American Dana Vollmer was back to defend her Olympic title, but the heavy favorite in this event was Sweden’s Sarah Sjoström. Sjoström had won three of the last four world titles in the event and had posted the five fastest times in history. Vollmer had retired after the London Olympics and had a baby in March 2015, but elected to return for Rio. Other potential medalists were Australia’s Emma McKeon, China’s Chen Xinyi, and Denmark’s Jeanette Ottesen Gray.

Sjoström did not disappoint, winning the gold medal with a world record of 55.48 in the final. Over a second behind was Canadian Penny Oleksiak, the break-out swimmer of the Rio Olympics, who would also win an individual gold medal in the 100 freestyle. Vollmer came through for the bronze medal.

Pos	Competitor	NOC	R1	SF	Final
1	Sarah Sjöström	SWE	56.26 (1 h6)	55.84 (1 h2)	55.48 (1)	Gold	WR
2	Penny Oleksiak	CAN	56.73 (2 h6)	57.10 (3 h2)	56.46 (2)	Silver
3	Dana Vollmer	USA	56.56 (1 h4)	57.06 (2 h1)	56.63 (3)	Bronze
4	Lu Ying	CHN	57.08 (3 h6)	57.15 (4 h2)	56.76 (4)
5	Rikako Ikee	JPN	57.27 (5 h6)	57.05 (1 h1)	56.86 (5)
6	Emma McKeon	AUS	57.33 (2 h5)	56.81 (2 h2)	57.05 (6)
7	Jeanette Ottesen Gray	DEN	57.15 (4 h6)	57.47 (3 h1)	57.17 (7)
8	Kelsi Worrell	USA	56.97 (1 h5)	57.54 (4 h1)	–
9	An Se-Hyeon	KOR	57.80 (3 h5)	57.95 (5 h2)	–
10	Natsumi Hoshi	JPN	58.15 (2 h3)	58.03 (6 h2)	–
11	Farida Osman	EGY	57.83 (3 h4)	58.26 (5 h1)	–
12	Liliána Szilágyi	HUN	57.70 (2 h4)	58.31 (6 h1)	–
13	Daiene Marçal	BRA	58.15 (4 h5)	58.52 (7 h1)	–
14	Kimberly Buys	BEL	57.91 (4 h4)	58.63 (7 h2)	–
15	Daynara de Paula	BRA	57.92 (1 h3)	58.65 (8 h1)	–
16	Madeline Groves	AUS	58.17 (5 h4)	–	–
17	Anna Ntountounaki	GRE	58.27 (6 h4)	–	–
18	Noemie Thomas	CAN	58.27 (5 h5)	–	–
19	Svetlana Chimrova	RUS	58.41 (6 h6)	–	–
20	Ilaria Bianchi	ITA	58.48 (6 h5)	–	–
21	Alexandra Wenk	GER	58.49 (7 h4)	–	–
22	Kristel Vourna	GRE	58.89 (7 h6)	–	–
23	Marie Wattel	FRA	58.90 (7 h5)	–	–
24	Béryl Gastaldello	FRA	58.93 (3 h3)	–	–
25	Nataliya Lovtsova	RUS	59.19 (8 h6)	–	–
26	Amit Ivry	ISR	59.42 (1 h2)	–	–
=27	Danielle Villars	SUI	59.45 (=4 h3)	–	–
=27	Lucie Svěcená	CZE	59.45 (=4 h3)	–	–
29	Katarína Listopadová	SVK	59.57 (6 h3)	–	–
30	Judit Ignacio	ESP	59.61 (7 h3)	–	–
31	Louise Hansson	SWE	59.73 (8 h5)	–	–
32	Helena Gasson	NZL	59.82 (8 h3)	–	–
33	Dar'ia Stepaniuk	UKR	1:00.81 (2 h2)	–	–
34	Quah Ting Wen	SGP	1:00.88 (3 h2)	–	–
35	Amina Kajtaz	BIH	1:01.67 (4 h2)	–	–
36	Marie Meza	CRC	1:02.01 (5 h2)	–	–
37	Sotiria Neofytou	CYP	1:02.91 (6 h2)	–	–
38	Jannah Sonnenschein	MOZ	1:04.21 (7 h2)	–	–
39	Dalia Tórrez	NCA	1:05.81 (8 h2)	–	–
40	Yusra Mardini	EOR	1:09.21 (1 h1)	–	–
41	Oreoluwa Cherebin	GRN	1:10.40 (2 h1)	–	–
42	Nuna Ba Matraf	YEM	1:11.16 (3 h1)	–	–
43	Johanna Umurungi	RWA	1:11.92 (4 h1)	–	–
44	Nada Arkaji	QAT	1:18.86 (5 h1)	–	–
DQ	Chen Xinyi	CHN	[57.17] (DQ h4)	[57.51] (DQ h2)	[56.72] (DQ)			1

Round One

Date	6 August 2016 — 13:28
Format	Fastest 16 swimmers advanced to semi-finals

Pos	Lane	Competitor	NOC	Time
1	–	Sarah Sjöström	SWE	56.26	Q
2	–	Dana Vollmer	USA	56.56	Q
3	–	Penny Oleksiak	CAN	56.73	Q
4	–	Kelsi Worrell	USA	56.97	Q
5	–	Lu Ying	CHN	57.08	Q
6	–	Jeanette Ottesen Gray	DEN	57.15	Q
7	–	Rikako Ikee	JPN	57.27	Q
8	–	Emma McKeon	AUS	57.33	Q
9	–	Liliána Szilágyi	HUN	57.70	Q
10	–	An Se-Hyeon	KOR	57.80	Q
11	–	Farida Osman	EGY	57.83	Q
12	–	Kimberly Buys	BEL	57.91	Q
13	–	Daynara de Paula	BRA	57.92	Q
=14	–	Natsumi Hoshi	JPN	58.15	Q
=14	–	Daiene Marçal	BRA	58.15	Q
16	–	Madeline Groves	AUS	58.17
=17	–	Anna Ntountounaki	GRE	58.27
=17	–	Noemie Thomas	CAN	58.27
19	–	Svetlana Chimrova	RUS	58.41
20	–	Ilaria Bianchi	ITA	58.48
21	–	Alexandra Wenk	GER	58.49
22	–	Kristel Vourna	GRE	58.89
23	–	Marie Wattel	FRA	58.90
24	–	Béryl Gastaldello	FRA	58.93
25	–	Nataliya Lovtsova	RUS	59.19
26	–	Amit Ivry	ISR	59.42
=27	–	Lucie Svěcená	CZE	59.45
=27	–	Danielle Villars	SUI	59.45
29	–	Katarína Listopadová	SVK	59.57
30	–	Judit Ignacio	ESP	59.61
31	–	Louise Hansson	SWE	59.73
32	–	Helena Gasson	NZL	59.82
33	–	Dar'ia Stepaniuk	UKR	1:00.81
34	–	Quah Ting Wen	SGP	1:00.88
35	–	Amina Kajtaz	BIH	1:01.67
36	–	Marie Meza	CRC	1:02.01
37	–	Sotiria Neofytou	CYP	1:02.91
38	–	Jannah Sonnenschein	MOZ	1:04.21
39	–	Dalia Tórrez	NCA	1:05.81
40	–	Yusra Mardini	EOR	1:09.21
41	–	Oreoluwa Cherebin	GRN	1:10.40
42	–	Nuna Ba Matraf	YEM	1:11.16
43	–	Johanna Umurungi	RWA	1:11.92
44	–	Nada Arkaji	QAT	1:18.86
DQ	–	Chen Xinyi	CHN	[57.17]	Q	2

Heat #1

Time	13:28

Pos	Lane	Competitor	NOC	Time	Reaction Time	50 m	50-100 m Time (Rank)
1	–	Yusra Mardini	EOR	1:09.21	0.72	31.68 (1)	37.53 (1)
2	–	Oreoluwa Cherebin	GRN	1:10.40	0.78	32.16 (2)	38.24 (3)
3	–	Nuna Ba Matraf	YEM	1:11.16	0.81	33.23 (4)	37.93 (2)
4	–	Johanna Umurungi	RWA	1:11.92	0.64	32.77 (3)	39.15 (4)
5	–	Nada Arkaji	QAT	1:18.86	0.81	35.02 (5)	43.84 (5)

Heat #2

Time	13:31

Pos	Lane	Competitor	NOC	Time	Reaction Time	50 m	50-100 m Time (Rank)
1	–	Amit Ivry	ISR	59.42	0.69	27.59 (1)	31.83 (1)
2	–	Dar'ia Stepaniuk	UKR	1:00.81	0.78	27.75 (2)	33.06 (3)
3	–	Quah Ting Wen	SGP	1:00.88	0.69	28.19 (3)	32.69 (2)
4	–	Amina Kajtaz	BIH	1:01.67	0.70	28.48 (4)	33.19 (4)
5	–	Marie Meza	CRC	1:02.01	0.71	28.51 (5)	33.50 (5)
6	–	Sotiria Neofytou	CYP	1:02.91	0.70	29.21 (7)	33.70 (6)
7	–	Jannah Sonnenschein	MOZ	1:04.21	0.69	28.83 (6)	35.38 (8)
8	–	Dalia Tórrez	NCA	1:05.81	0.79	30.68 (8)	35.13 (7)

Heat #3

Time	13:34

Pos	Lane	Competitor	NOC	Time	Reaction Time	50 m	50-100 m Time (Rank)
1	–	Daynara de Paula	BRA	57.92	0.60	26.84 (1)	31.08 (2)	Q
2	–	Natsumi Hoshi	JPN	58.15	0.65	27.60 (5)	30.55 (1)	Q
3	–	Béryl Gastaldello	FRA	58.93	0.65	27.21 (2)	31.72 (4)
=4	–	Lucie Svěcená	CZE	59.45	0.72	27.29 (3)	32.16 (7)
=4	–	Danielle Villars	SUI	59.45	0.70	28.16 (8)	31.29 (3)
6	–	Katarína Listopadová	SVK	59.57	0.68	27.78 (7)	31.79 (5)
7	–	Judit Ignacio	ESP	59.61	0.70	27.72 (6)	31.89 (6)
8	–	Helena Gasson	NZL	59.82	0.63	27.38 (4)	32.44 (8)

Heat #4

Time	13:37

Pos	Lane	Competitor	NOC	Time	Reaction Time	50 m	50-100 m Time (Rank)
1	–	Dana Vollmer	USA	56.56	0.70	26.26 (1)	30.30 (2)	Q
2	–	Liliána Szilágyi	HUN	57.70	0.68	26.86 (2)	30.84 (5)	Q
3	–	Farida Osman	EGY	57.83	0.71	27.05 (5)	30.78 (4)	Q
4	–	Kimberly Buys	BEL	57.91	0.75	27.16 (7)	30.75 (3)	Q
5	–	Madeline Groves	AUS	58.17	0.70	27.01 (4)	31.16 (8)
6	–	Anna Ntountounaki	GRE	58.27	0.70	27.12 (6)	31.15 (7)
7	–	Alexandra Wenk	GER	58.49	0.71	27.45 (8)	31.04 (6)
DQ	–	Chen Xinyi	CHN	[57.17]	[0.68]	[26.97] ([3])	[30.20 (1)]	Q	3

Heat #5

Time	13:40

Pos	Lane	Competitor	NOC	Time	Reaction Time	50 m	50-100 m Time (Rank)
1	–	Kelsi Worrell	USA	56.97	0.63	26.72 (2)	30.25 (1)	Q
2	–	Emma McKeon	AUS	57.33	0.75	26.85 (3)	30.48 (2)	Q
3	–	An Se-Hyeon	KOR	57.80	0.69	26.86 (4)	30.94 (4)	Q
4	–	Daiene Marçal	BRA	58.15	0.63	27.51 (7)	30.64 (3)	Q
5	–	Noemie Thomas	CAN	58.27	0.58	26.67 (1)	31.60 (6)
6	–	Ilaria Bianchi	ITA	58.48	0.67	27.32 (6)	31.16 (5)
7	–	Marie Wattel	FRA	58.90	0.73	27.26 (5)	31.64 (7)
8	–	Louise Hansson	SWE	59.73	0.74	27.59 (8)	32.14 (8)

Heat #6

Time	13:43

Pos	Lane	Competitor	NOC	Time	Reaction Time	50 m	50-100 m Time (Rank)
1	–	Sarah Sjöström	SWE	56.26	0.72	26.33 (1)	29.93 (1)	Q
2	–	Penny Oleksiak	CAN	56.73	0.69	26.60 (4)	30.13 (2)	Q
3	–	Lu Ying	CHN	57.08	0.70	26.68 (5)	30.40 (3)	Q
4	–	Jeanette Ottesen Gray	DEN	57.15	0.67	26.55 (3)	30.60 (4)	Q
5	–	Rikako Ikee	JPN	57.27	0.65	26.45 (2)	30.82 (5)	Q
6	–	Svetlana Chimrova	RUS	58.41	0.69	27.04 (6)	31.37 (7)
7	–	Kristel Vourna	GRE	58.89	0.71	27.57 (8)	31.32 (6)
8	–	Nataliya Lovtsova	RUS	59.19	0.78	27.26 (7)	31.93 (8)

Semi-Finals

Date	6 August 2016 — 22:14
Format	Fastest eight swimmers advanced to final

Pos	Lane	Competitor	NOC	Time
1	–	Sarah Sjöström	SWE	55.84	QOR
2	–	Emma McKeon	AUS	56.81	Q
3	–	Rikako Ikee	JPN	57.05	Q
4	–	Dana Vollmer	USA	57.06	Q
5	–	Penny Oleksiak	CAN	57.10	Q
6	–	Lu Ying	CHN	57.15	Q
7	–	Jeanette Ottesen Gray	DEN	57.47	Q
8	–	Kelsi Worrell	USA	57.54
9	–	An Se-Hyeon	KOR	57.95
10	–	Natsumi Hoshi	JPN	58.03
11	–	Farida Osman	EGY	58.26
12	–	Liliána Szilágyi	HUN	58.31
13	–	Daiene Marçal	BRA	58.52
14	–	Kimberly Buys	BEL	58.63
15	–	Daynara de Paula	BRA	58.65
DQ	–	Chen Xinyi	CHN	[57.51]	Q	4

Heat #1

Time	22:14

Pos	Lane	Competitor	NOC	Time	Reaction Time	50 m	50-100 m Time (Rank)
1	–	Rikako Ikee	JPN	57.05	0.63	27.14 (6)	29.91 (1)	Q
2	–	Dana Vollmer	USA	57.06	0.70	26.10 (1)	30.96 (5)	Q
3	–	Jeanette Ottesen Gray	DEN	57.47	0.70	26.73 (2)	30.74 (3)	Q
4	–	Kelsi Worrell	USA	57.54	0.64	26.83 (4)	30.71 (2)
5	–	Farida Osman	EGY	58.26	0.71	27.51 (7)	30.75 (4)
6	–	Liliána Szilágyi	HUN	58.31	0.67	26.74 (3)	31.57 (7)
7	–	Daiene Marçal	BRA	58.52	0.67	27.53 (8)	30.99 (6)
8	–	Daynara de Paula	BRA	58.65	0.63	27.01 (5)	31.64 (8)

Heat #2

Time	22:22

Pos	Lane	Competitor	NOC	Time	Reaction Time	50 m	50-100 m Time (Rank)
1	–	Sarah Sjöström	SWE	55.84	0.72	26.34 (2)	29.50 (1)	QOR
2	–	Emma McKeon	AUS	56.81	0.75	26.27 (1)	30.54 (6)	Q
3	–	Penny Oleksiak	CAN	57.10	0.68	26.83 (5)	30.27 (3)	Q
4	–	Lu Ying	CHN	57.15	0.72	26.73 (3)	30.42 (4)	Q
5	–	An Se-Hyeon	KOR	57.95	0.67	27.44 (7)	30.51 (5)
6	–	Natsumi Hoshi	JPN	58.03	0.64	27.89 (8)	30.14 (2)
7	–	Kimberly Buys	BEL	58.63	0.75	26.75 (4)	31.88 (8)
DQ	–	Chen Xinyi	CHN	[57.51]	[0.71]	[26.93] ([6])	[30.58 (7)]	Q	5

Final Round

Date	7 August 2016 — 22:03

Pos	Lane	Competitor	NOC	Time	Reaction Time	50 m	50-100 m Time (Rank)
1	–	Sarah Sjöström	SWE	55.48	0.73	26.01 (1)	29.47 (1)	WR
2	–	Penny Oleksiak	CAN	56.46	0.72	26.37 (3)	30.09 (4)
3	–	Dana Vollmer	USA	56.63	0.73	26.45 (4)	30.18 (5)
4	–	Lu Ying	CHN	56.76	0.70	26.53 (5)	30.23 (6)
5	–	Rikako Ikee	JPN	56.86	0.65	26.81 (7)	30.05 (3)
6	–	Emma McKeon	AUS	57.05	0.74	26.76 (6)	30.29 (7)
7	–	Jeanette Ottesen Gray	DEN	57.17	0.67	26.02 (2)	31.15 (8)
DQ	–	Chen Xinyi	CHN	[56.72]	[0.71]	[26.98] ([8])	[29.74 (2)]		6