Swimming at the 1973 World Aquatics Championships – Men's 100 metre butterfly explained

Event:	Men's 100 metre butterfly
Competition:	1973 World Aquatics Championships
Dates:	September 8, 1973
Competitors:	25
Nations:	20
Win Value:	55.69 CR
Gold:	Bruce Robertson
Goldnoc:	CAN
Silver:	Joe Bottom
Silvernoc:	USA
Bronze:	Robin Backhaus
Bronzenoc:	USA
Next:	1975

The men's 100 metre butterfly competition of the swimming events at the 1973 World Aquatics Championships took place on September 8.

Records

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

The following records were established during the competition:

Date	Event	Time	Record
8 September	Heat 1	56.89	CR
8 September	Heat 4	55.94	CR
8 September	Final	55.69	CR

25 swimmers participated in 4 heats. The eight fastest times advanced to the final.^[1] ^[2]

Rank	Heat	Lane	Name	Time	Notes
1	4	-		55.94	Q, CR
2	1	-		56.89	Q, CR
3	3	-		56.90	Q
4	2	-		56.94	Q
5	3	-		57.35	Q
6	4	-		57.58	Q
7	1	-		57.69	Q
8	1	-		57.98	Q
9	2	-		58.00
10	3	-		58.47
11	2	-		58.68
12	2	-		59.09
13	3	-		59.13
14	2	-		59.21
15	1	-		59.47
16	4	-		59.78
17	4	-		59.99
18	4	-		1:00.34
19	3	-		1:00.39
20	1	-		1:00.48
21	3	-		1:00.88
22	1	-		1:01.77
23	3	-		1:02.68
24	2	-		1:05.44
25	4	-	O. Mehmat	1:09.20
	-	-		-	DNS

Roland Mattes had to withdraw from the event following a poolside accident when he slipped and sprained his ankle.^[3]

The results of the final are below.^[4]

News: Sports Results. The Sun-Herald. John Fairfax and Sons. 9 September 1973. 93.
Web site: Official results. FINA.org. 25 July 2019.
News: Aust second in swim relay. The Sun-Herald. AAP. John Fairfax and Sons. 9 September 1973. 91.
Web site: Todor. Krastev. Men 100m Butterfly Swimming World Championship 1973 Belgrade (YUG). todor66.com. 6 June 2013.