2018 FINA World Swimming Championships (25 m) – Men's 50 metre butterfly explained

Event:	Men's 50 metre butterfly
Competition:	2018 FINA World Swimming Championships (25 m)
Venue:	Hangzhou Sports Park Stadium
Dates:	14 December (heats and semifinals) 15 December (final)
Competitors:	104
Win Value:	21.81 CR
Gold:	Nicholas Santos
Goldnoc:	BRA
Silver:	Chad le Clos
Silvernoc:	RSA
Bronze:	Dylan Carter
Bronzenoc:	TTO
Prev:	2016
Next:	2021

The Men's 50 metre butterfly competition of the 2018 FINA World Swimming Championships (25 m) was held on 14 and 15 December 2018 at the Hangzhou Olympic Sports Center.^[1]

Records

Prior to the competition, the existing world and championship records were as follows.

	Name	Nation	Time	Location	Date
World record	Nicholas Santos		21.75	Budapest	6 October 2018
Championship record	Chad le Clos		21.95	Doha	6 December 2014

The following new records were set during this competition:

The heats were started at 9:52.^[2]

Rank	Heat	Lane	Time	Notes
1	11	4	22.41	Q
2	9	3	22.53	Q
3	11	6	22.59	Q
4	10	4	22.67	Q
5	10	3	22.78	Q
6	9	6	22.79	Q
6	10	2	22.79	Q
8	10	5	22.80	Q
9	9	5	22.83	Q
10	9	1	22.86	Q
11	11	5	22.93	Q
12	11	3	22.96	Q
13	10	1	23.02	Q
13	10	9	23.02	Q
15	10	7	23.03	Q
16	9	7	23.08
16	11	7	23.08
18	10	6	23.10
19	11	0	23.13
20	9	0	23.14
20	11	1	23.14
22	11	8	23.19
23	9	2	23.21
24	8	4	23.24
25	11	9	23.26
26	7	7	23.35
26	11	2	23.35
28	8	2	23.37
29	8	3	23.40
30	7	2	23.42
31	9	8	23.48
32	8	5	23.59
33	8	6	23.63
34	9	9	23.74
35	8	0	23.76
36	8	1	23.77
37	7	0	23.80
38	7	4	23.89
39	6	3	23.96
40	7	5	23.97
41	6	5	24.04
42	6	7	24.06
43	7	3	24.07
44	8	8	24.17
45	7	8	24.18
45	10	0	24.18
47	6	4	24.22
47	8	7	24.22
49	8	9	24.23
50	6	9	24.43
51	7	9	24.48
52	2	4	24.50	NR
53	6	6	24.55	NR
54	2	1	24.58	NR
54	6	8	24.58
56	5	4	24.73
57	6	0	24.74
57	6	1	24.74
59	6	2	24.77
60	2	0	24.86
61	5	5	25.10
62	5	2	25.17	NR
63	5	3	25.20	NR
64	2	5	25.25
65	5	7	25.49
66	5	0	25.66
67	2	8	25.95
68	4	3	26.10
68	4	6	26.10
70	1	6	26.16
71	4	2	26.19
72	5	8	26.38	NR
73	5	9	26.45
74	4	4	26.46
75	4	5	26.52
76	4	7	26.73
77	2	3	26.85
78	2	9	27.02
79	1	2	27.54
80	4	1	27.68
81	2	2	27.72
82	2	6	27.73
83	3	7	27.74
84	3	0	27.95
85	3	3	28.21
86	4	8	28.54
87	1	5	28.85
88	3	6	29.22
89	4	9	29.58
90	3	1	29.88
91	4	0	29.99
92	3	8	30.21
93	3	5	30.79
94	3	9	31.59
95	3	4	31.73
96	2	7	32.62
97	1	4	33.19
98	1	3	34.20
	5	6	DNS
	7	1	DNS
	7	6	DNS
	10	8	DNS
	3	2	DSQ
	5	1	DSQ

The swim-off was held on 14 December at 11:07.^[3]

Rank	Lane	Name	Nationality	Time	Notes
1	5			22.71	Q
2	4			23.18

The semifinals were held at 19:33.^[4]

Rank	Lane	Time	Notes
1	4	21.96	Q
2	5	22.44	Q
3	3	22.52	Q
4	2	22.74	Q
5	6	22.75	Q
6	8	22.76	NR
7	1	22.79
8	7	22.81

The final was held at 19:41.^[5]