Swimming at the 2009 World Aquatics Championships – Women's 100 metre butterfly explained

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The first heats of the Women's 100 m Butterfly took place on the morning of Sunday, 26 July. The semi-final took place in the evening session of 26 July and the final took place on the evening of 27 July at the Foro Italico in Rome, Italy. In the final, 7 of the 8 swimmers finished within the same second, and 5 within the same 0.1 of a second.

Records

Prior to this competition, the existing world and competition records were as follows:

World record		56.61		align=right	17 September 2000
Championship record		57.15		align=right	26 March 2007

The following records were established during the competition:

Date	Round	Name	Nationality	Time	Record
26 July	Heat 9			56.76	CR
26 July	Semifinal 2			56.44	WR
27 July	Final			56.06	WR

Results

Heats

Rank	Name	Nationality	Time	Heat	Lane	Notes
1			56.76	9	6	CR, NR
2			57.15	10	5
3			57.17	10	4
4			57.34	10	8
5			57.48	9	4
6			57.58	10	7	NR
7			57.67	10	9	NR
8			57.75	11	6	NR
9			57.76	9	3
10			57.90	11	5
11			58.04	9	7	NR
12			58.06	11	4
13			58.07	9	5
14			58.26	9	8
15			58.31	10	6
16			58.35	10	2
17			58.60	10	3
18			58.61	11	7
19			58.62	9	1	NR
20			58.67	8	5	NR
21			58.74	10	0
22			58.81	9	2
23			59.00	8	3	NR
23			59.00	11	8
25			59.02	11	9
26			59.06	11	2
27			59.10	11	1
28			59.24	11	0
29			59.60	8	4
30			59.69	8	6
31			59.73	11	3
32			59.77	9	0
33			59.85	8	8
34			59.87	8	1	NR
35			59.93	9	9
36			59.95	10	1
37			1:00.32	8	0
38			1:00.37	7	6
39			1:00.42	7	5
40			1:00.46	8	9
41			1:00.47	7	1	NR
42			1:00.50	8	7
43			1:00.56	6	7	NR
44			1:00.67	7	4
45			1:00.83	6	5
46			1:00.86	7	7
47			1:00.93	7	3
48			1:01.05	7	0
49			1:01.19	6	1
50			1:01.22	6	3	NR
51			1:01.24	7	2
52			1:01.27	6	0
53			1:01.31	8	2
54			1:01.51	6	4
55			1:01.95	7	8
56			1:02.09	7	9
57			1:02.14	6	2
58			1:02.22	5	3
59			1:02.52	6	9
60			1:02.56	6	6
61			1:02.60	5	5	NR
62			1:02.92	5	4
63			1:03.05	6	8
64			1:03.21	5	6
65			1:03.25	5	7
66			1:03.33	5	9
67			1:03.38	5	2
68			1:03.47	5	1
69			1:03.77	5	0
70			1:04.18	4	3
71			1:04.21	4	6
72			1:04.34	4	2
72			1:04.34	5	8
74			1:04.45	4	0
75			1:04.95	4	9
76			1:05.06	4	5
77			1:05.13	4	8
78			1:05.41	3	5
79			1:05.55	4	4
80			1:05.64	3	3
81			1:05.80	2	2
82			1:05.83	3	8
83			1:05.93	3	4
84			1:06.05	3	6
85			1:06.51	4	7
86			1:07.07	4	1
87			1:07.42	3	7
88			1:07.52	3	0
89			1:08.17	3	9
90			1:08.28	2	5
91			1:08.39	3	2
92			1:08.89	2	9
93			1:09.10	2	4
94			1:09.51	2	6
95			1:09.67	2	1
96			1:09.99	2	8
97			1:11.63	2	0
98			1:13.51	2	3
99			1:14.04	1	5
100			1:14.08	2	7
101			1:14.99	1	4
102			1:25.88	1	3

Key: CR = Championship record, NR = National record

Semifinals

Rank	Name	Nationality	Time	Heat	Lane	Notes
1			56.44	2	4	WR
2			57.08	2	5
3			57.19	1	4
4			57.20	2	6	NR
5			57.25	1	2
6			57.39	1	6	NR
7			57.42	1	8	SA
8			57.56	1	7
8			57.56	1	5
10			57.59	2	3
11			57.65	1	3
12			57.68	1	1
13			57.71	2	2
14			57.90	2	7	NR
15			57.95	2	8
16			58.25	2	1

Swim-off

Rank	Name	Nationality	Time	Lane	Notes
1			57.38	4
2			57.62	5

Finals

Rank	Name	Nationality	Time	Lane	Notes
			56.06	4	WR
			56.23	5	OC
			56.86	2	AS
4			56.89	7	NR
5			56.94	1	=AM
5			56.94	3	=AM
7			56.96	6	NR
8			57.79	8

Note: The Dutch Record in this event is Inge de Bruijn's former World Record (56.61), which may help to explain why Veldhuis was the only finalist not to set a National Record (NR).

External links

• Heats Results
• Semifinals Results
• Swim-off Results
• Finals Results