| | Event type

100 metres Butterfly, Women

Date	31 August – 1 September 1972
Status	Olympic
Location	Schwimmhalle, Olympiapark, München
Participants	30 from 21 countries

At a meet in Tokyo in July 1972 Japan’s Mayumi Aoki had set a world record in this event with 1:03.9. She was little known prior to that record but with no clear favorite in the event she seemed as good a bet as any. In the first semi-final, Hungary’s Andrea Gyarmati recorded 1:03.80 to better Aoki’s record. Aoki qualified second in the second semi. The early leader of the final was East Germany’s Roswitha Beier, who turned first, with six other swimmers in a blanket for second, while America’s best, Deena Deardurff, was last after a poor start. Beier maintained her lead until 10 metres from the wall when Aoki shot past to win the gold medal with another world record of 1:03.34. Beier held on for silver, with Gyarmati taking bronze. Deardurff closed quickly to take fourth, but she had dug too deep a hole for herself.

Pos	Swimmer	NOC	R1	SF	Final
1	Mayumi Aoki	JPN	1:04.00 (1 h4)	1:04.11 (2 h2)	1:03.34 (1)	Gold
2	Roswitha Beier	GDR	1:04.34 (2 h2)	1:04.36 (2 h1)	1:03.61 (2)	Silver
3	Andrea Gyarmati	HUN	1:04.01 (1 h2)	1:03.80 (1 h1)	1:03.73 (3)	Bronze
4	Deena Deardurff	USA	1:04.80 (1 h3)	1:03.97 (1 h2)	1:03.95 (4)
5	Dana Shrader	USA	1:05.09 (1 h1)	1:04.54 (3 h1)	1:03.98 (5)
6	Ellie Daniel	USA	1:04.33 (2 h4)	1:04.25 (3 h2)	1:04.08 (6)
7	Gudrun Beckmann	FRG	1:05.26 (3 h4)	1:04.52 (4 h2)	1:04.15 (7)
8	Noriko Asano	JPN	1:04.97 (3 h3)	1:04.53 (5 h2)	1:04.25 (8)
9	Rosemarie Kother	GDR	1:04.83 (2 h3)	1:04.64 (4 h1)	–
10	Edeltraud Koch	FRG	1:05.29 (2 h1)	1:05.28 (5 h1)	–
11	Heike Nagel	FRG	1:05.64 (4 h4)	1:06.48 (6 h2)	–
=12	Marilyn Corson	CAN	1:06.26 (5 h4)	1:06.78 (7 h1)	–
=12	Frieke Buys	NED	1:06.89 (3 h1)	1:06.78 (6 h1)	–
14	Margrit Thomet	SUI	1:07.28 (4 h1)	1:07.12 (7 h2)	–
15	Eva Wikner	SWE	1:06.70 (3 h2)	1:07.53 (8 h2)	–
16	Irina Ustimenko	URS	1:07.44 (4 h2)	1:07.76 (8 h1)	–
17	Sue Funch	AUS	1:07.51 (4 h3)	–	–
18	Jean Jeavons	GBR	1:07.64 (5 h3)	–	–
19	Věra Faitlová	TCH	1:08.18 (6 h3)	–	–
20	Aurora Chamorro	ESP	1:08.39 (5 h2)	–	–
21	Brenda McGrory	IRL	1:08.52 (5 h1)	–	–
22	Donatella Talpo	ITA	1:08.98 (6 h1)	–	–
23	Leslie Cliff	CAN	1:09.29 (6 h2)	–	–
24	Susan Smith	CAN	1:09.38 (7 h1)	–	–
25	Judit Turóczy	HUN	1:09.73 (6 h4)	–	–
26	Ileana Morales	VEN	1:10.37 (7 h4)	–	–
27	Tay Chin Joo	SGP	1:10.92 (7 h3)	–	–
28	Hsu Yue-Yun	TPE	1:11.67 (7 h2)	–	–
29	Susana Saxlund	URU	1:11.90 (8 h3)	–	–
30	Norma Amezcua	MEX	1:12.23 (8 h1)	–	–
DNS	Zhanet Slavcheva	BUL	– (DNS h2)	–	–
DNS	Mireille Bassoul	LBN	– (DNS h4)	–	–

Round One (31 August 1972 — 10:30)

Fastest 16 advanced to the semi-finals.

Heat One

Pos	Lane	Swimmer	NOC	50 m	Time
1	–	Dana Shrader	USA	30.63 (1) 34.46 (1)	1:05.09	Q
2	–	Edeltraud Koch	FRG	30.72 (2) 34.57 (2)	1:05.29	Q
3	–	Frieke Buys	NED	31.69 (5) 35.20 (3)	1:06.89	Q
4	–	Margrit Thomet	SUI	31.40 (3) 35.88 (4)	1:07.28	Q
5	–	Brenda McGrory	IRL	32.06 (7) 36.46 (5)	1:08.52
6	–	Donatella Talpo	ITA	31.95 (6) 37.03 (6)	1:08.98
7	–	Susan Smith	CAN	31.57 (4) 37.81 (7)	1:09.38
8	–	Norma Amezcua	MEX	33.14 (8) 39.09 (8)	1:12.23

Heat Two

Pos	Lane	Swimmer	NOC	50 m	Time
1	–	Andrea Gyarmati	HUN	29.76 (2) 34.25 (1)	1:04.01	QOR
2	–	Roswitha Beier	GDR	29.58 (1) 34.76 (2)	1:04.34	Q
3	–	Eva Wikner	SWE	30.88 (3) 35.82 (4)	1:06.70	Q
4	–	Irina Ustimenko	URS	31.92 (6) 35.52 (3)	1:07.44	Q
5	–	Aurora Chamorro	ESP	31.53 (4) 36.86 (5)	1:08.39
6	–	Leslie Cliff	CAN	31.80 (5) 37.49 (6)	1:09.29
7	–	Hsu Yue-Yun	TPE	31.94 (7) 39.73 (7)	1:11.67
DNS	–	Zhanet Slavcheva	BUL	– (–) –	–

Heat Three

Pos	Lane	Swimmer	NOC	50 m	Time
1	–	Deena Deardurff	USA	30.38 (1) 34.42 (3)	1:04.80	Q
2	–	Rosemarie Kother	GDR	30.46 (2) 34.37 (2)	1:04.83	Q
3	–	Noriko Asano	JPN	30.85 (3) 34.12 (1)	1:04.97	Q
4	–	Sue Funch	AUS	31.47 (6) 36.04 (4)	1:07.51
5	–	Jean Jeavons	GBR	31.39 (5) 36.25 (5)	1:07.64
6	–	Věra Faitlová	TCH	31.25 (4) 36.93 (6)	1:08.18
7	–	Tay Chin Joo	SGP	33.17 (7) 37.75 (7)	1:10.92
8	–	Susana Saxlund	URU	33.53 (8) 38.37 (8)	1:11.90

Heat Four

Pos	Lane	Swimmer	NOC	50 m	Time
1	–	Mayumi Aoki	JPN	30.61 (3) 33.39 (1)	1:04.00	QOR
2	–	Ellie Daniel	USA	30.28 (2) 34.05 (3)	1:04.33	Q
3	–	Gudrun Beckmann	FRG	31.45 (5) 33.81 (2)	1:05.26	Q
4	–	Heike Nagel	FRG	30.27 (1) 35.37 (5)	1:05.64	Q
5	–	Marilyn Corson	CAN	31.51 (6) 34.75 (4)	1:06.26	Q
6	–	Judit Turóczy	HUN	31.26 (4) 38.47 (7)	1:09.73
7	–	Ileana Morales	VEN	32.69 (7) 37.68 (6)	1:10.37
DNS	–	Mireille Bassoul	LBN	– (–) –	–

Semi-Finals (31 August 1972 — 17:30)

Top three in each heat and next two fastest advanced to the final.

Heat One

Pos	Lane	Swimmer	NOC	50 m	Time
1	–	Andrea Gyarmati	HUN	29.49 (2) 34.31 (3)	1:03.80	QOR
2	–	Roswitha Beier	GDR	29.46 (1) 34.90 (5)	1:04.36	Q
3	–	Dana Shrader	USA	30.25 (3) 34.29 (2)	1:04.54	Q
4	–	Rosemarie Kother	GDR	31.02 (5) 33.62 (1)	1:04.64
5	–	Edeltraud Koch	FRG	30.56 (4) 34.72 (4)	1:05.28
6	–	Frieke Buys	NED	31.07 (6) 35.71 (8)	1:06.78
7	–	Marilyn Corson	CAN	31.56 (7) 35.22 (6)	1:06.78
8	–	Irina Ustimenko	URS	32.12 (8) 35.64 (7)	1:07.76

Heat Two

Pos	Lane	Swimmer	NOC	50 m	Time
1	–	Deena Deardurff	USA	31.15 (8) 32.82 (1)	1:03.97	Q
2	–	Mayumi Aoki	JPN	30.66 (4) 33.45 (2)	1:04.11	Q
3	–	Ellie Daniel	USA	30.37 (2) 33.88 (4)	1:04.25	Q
4	–	Gudrun Beckmann	FRG	29.98 (1) 34.54 (5)	1:04.52	Q
5	–	Noriko Asano	JPN	30.67 (5) 33.86 (3)	1:04.53	Q
6	–	Heike Nagel	FRG	31.04 (6) 35.44 (6)	1:06.48
7	–	Margrit Thomet	SUI	31.09 (7) 36.03 (7)	1:07.12
8	–	Eva Wikner	SWE	30.60 (3) 36.93 (8)	1:07.53

Final (1 September 1972 — 18:40)

Pos	Lane	Swimmer	NOC	50 m	Time
1	3	Mayumi Aoki	JPN	30.34 (7) 33.00 (1)	1:03.34	OR
2	2	Roswitha Beier	GDR	29.61 (1) 34.00 (5)	1:03.61
3	4	Andrea Gyarmati	HUN	30.27 (=5) 33.46 (2)	1:03.73
4	5	Deena Deardurff	USA	30.40 (8) 33.55 (3)	1:03.95
5	8	Dana Shrader	USA	29.94 (2) 34.04 (=6)	1:03.98
6	6	Ellie Daniel	USA	30.04 (=3) 34.04 (=6)	1:04.08
7	7	Gudrun Beckmann	FRG	30.04 (=3) 34.11 (8)	1:04.15
8	1	Noriko Asano	JPN	30.27 (=5) 33.98 (4)	1:04.25