Swimming at the 2013 World Aquatics Championships – Men's 100 metre butterfly explained

Event:	Men's 100 metre butterfly
Competition:	2013 World Aquatics Championships
Venue:	Palau Sant Jordi
Dates:	August 2, 2013 (heats &<br/>semifinals) August 3, 2013 (final)
Competitors:	57
Nations:	49
Win Value:	51.06
Gold:	Chad le Clos
Goldnoc:	RSA
Silver:	László Cseh
Silvernoc:	HUN
Bronze:	Konrad Czerniak
Bronzenoc:	POL
Prev:	2011
Next:	2015

The men's 100 metre butterfly event in swimming at the 2013 World Aquatics Championships took place on 2–3 August at the Palau Sant Jordi in Barcelona, Spain.^[1] ^[2]

Records

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

The heats were held at 10:39.^[3]

Rank	Heat	Lane	Time	Notes
1	4	4	51.55	Q
2	5	4	51.88	Q
3	6	8	51.89	Q
4	5	7	51.95	Q
5	5	5	52.00	Q
6	4	6	52.03	Q, NR
7	6	4	52.07	Q
8	5	6	52.09	Q
9	5	3	52.12	Q
10	6	6	52.13	Q
11	4	3	52.16	Q
12	5	0	52.23	Q
13	4	5	52.26	Q
14	6	5	52.38	Q
15	5	2	52.50	Q
16	6	7	52.52	Q
17	4	7	52.56
18	5	8	52.75
19	4	2	52.82
20	6	3	52.83
21	5	1	52.87
22	3	6	52.92
23	4	8	52.94
24	6	2	52.98
25	6	1	53.11
25	6	0	53.11
27	6	9	53.28
28	3	5	53.34
29	3	3	53.53
30	4	1	53.77
31	5	9	53.83
32	3	4	53.96
33	3	2	53.97
34	4	0	54.09
35	3	7	54.29
36	3	1	54.37
37	3	9	54.39
38	3	0	54.63
39	2	7	55.82
40	2	1	55.92
41	2	6	56.06
42	2	2	56.27
43	2	3	56.32
44	2	4	56.38
45	3	8	56.40
46	1	6	56.48
46	2	5	56.48
48	1	4	56.50
49	1	3	57.66
50	2	0	57.79
51	2	8	59.29
52	2	9	59.81
53	1	2	59.86
54	1	1
55	1	7
56	1	9
57	1	8
	1	0
	1	5
	4	9

The semifinals were held at 19:04.^[4]

Rank	Lane	Time	Notes
1	1	51.48	Q
2	2	51.55	Q
3	4	51.60	Q
4	5	51.61	Q, NR
5	3	51.64	Q, NR
6	6	51.65	Q
7	7	51.85
8	8	52.27

The final was held at 18:43.^[5]