Swimming at the 2009 World Aquatics Championships – Women's 50 metre breaststroke explained

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The heats for the women's 50 m breaststroke race at the 2009 World Championships took place in the morning of 1 August, with the final in the evening session of 2 August at the Foro Italico in Rome, Italy.

Records

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

World record		30.23		align=right	8 July 2009
Championship record		30.45		align=right	31 July 2005

The following records were established during the competition:

Date	Round	Time	Record
1 August	Heat 10	30.34	CR
1 August	Heat 12	30.24	CR
2 August	Final	30.09	WR

Results

Heats

Rank	Time	Heat	Lane	Notes
1	30.24	12	4	CR, ER
2	30.34	10	6	NR
3	30.48	10	5
4	30.57	12	3	NR
5	30.73	10	4
6	30.77	10	7	NR
7	30.82	11	6
8	30.96	12	5
9	31.02	11	5
10	31.06	12	6
11	31.10	11	4
12	31.11	7	5
12	31.11	9	4	NR
14	31.13	12	2
15	31.14	9	6
16	31.15	8	5
17	31.23	11	0	NR
18	31.27	11	7
19	31.29	9	7
20	31.30	10	0	NR
21	31.32	9	2	NR
21	31.32	10	8	NR
21	31.32	12	1
24	31.38	12	7
25	31.52	9	5	NR
26	31.55	10	2
27	31.61	11	3
28	31.68	10	1
29	31.69	8	4
29	31.69	10	9
31	31.77	11	8
32	31.79	11	2
33	31.82	9	1
34	31.85	7	6
35	31.87	9	3
36	31.88	12	9
37	31.98	9	8	NR
37	31.98	11	1
39	32.00	11	9
40	32.12	8	6	NR
41	32.24	12	0
42	32.37	7	7	NR
43	32.46	8	8
44	32.53	7	2
45	32.55	8	0
46	32.68	7	4	NR
47	32.71	8	3
48	32.84	6	7	NR
49	32.87	7	1
50	32.93	9	9
51	32.95	8	1
52	32.97	7	0
53	33.34	6	5
54	33.36	7	8
55	33.46	8	7
56	33.50	6	8	NR
57	33.61	6	4
58	33.70	5	5	NR
59	33.93	7	9
59	33.93	8	9
61	33.95	6	2
62	34.12	5	4
63	34.87	6	6
64	34.93	5	1	NR
65	34.95	5	8
66	35.07	4	5
67	35.15	5	0
68	35.20	6	9
69	35.72	6	1
70	35.74	6	3
71	35.77	5	3
72	35.87	6	0
73	35.90	4	7	NR
74	36.35	5	2
75	36.55	5	7
76	36.62	4	3
77	36.74	4	2
78	37.00	3	7
79	37.17	5	6
80	37.29	4	6
81	37.81	3	5
82	37.88	5	9
83	37.94	4	0
84	38.24	4	4
85	38.90	3	2
86	39.07	2	0
87	39.09	3	3
88	39.42	2	5
89	39.51	3	4
90	40.39	3	0
91	40.61	4	9
92	40.65	3	6
93	40.67	4	1
94	41.08	2	3
95	41.43	2	4
96	41.65	3	8
97	41.81	3	9
98	41.85	2	6
99	42.55	3	1
100	43.26	1	6
101	44.71	1	5
102	46.12	2	1
103	46.51	7	3
104	46.91	2	2
105	47.48	1	4
106	48.23	2	8
107	48.25	2	7
–	DQ	1	3
–	DNS	4	8
–	DNS	8	2
–	DNS	9	0
–	DNS	10	3
–	DNS	12	8

Semifinals

Rank	Time	Heat	Lane	Notes
1	30.33	2	5
2	30.38	1	5	NR
3	30.40	2	4
4	30.42	2	3
5	30.46	1	4
6	30.56	2	6
7	30.80	1	6
8	30.92	2	7
8	30.92	2	2
10	31.03	1	8
11	31.04	1	3
12	31.09	2	1	NR
13	31.12	1	2
14	31.16	1	1
15	31.25	1	7
16	31.37	2	8

Swim-off

Rank	Name	Nationality	Time	Lane	Notes
1			30.98	5
2			30.99	4

Final

Rank	Time	Lane	Notes
	30.09	3	WR
	30.11	7	AM
	30.16	4	OC
4	30.46	5
5	30.53	8
6	30.65	2
7	30.67	6
8	30.91	1