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Men's 100 metre butterfly at the 2019 Pan American Games
Venue	Villa Deportiva Nacional, VIDENA
Dates	August 7 (preliminaries and finals)
Competitors	23 from 18 nations
Medalists
Tom Shields   United States   Luis Martínez   Guatemala   Vinicius Lanza   Brazil
«2015 2023»

Swimming at the 2019 Pan American Games
Qualification
Freestyle
50 m	men	women
100 m	men	women
200 m	men	women
400 m	men	women
800 m	men	women
1500 m	men	women
Backstroke
100 m	men	women
200 m	men	women
Breaststroke
100 m	men	women
200 m	men	women
Butterfly
100 m	men	women
200 m	men	women
Individual medley
200 m	men	women
400 m	men	women
Freestyle relay
4×100 m	men	women	mixed
4×200 m	men	women
Medley relay
4×100 m	men	women	mixed
Marathon
10 km	men	women
v t e

The men's 100 metre butterfly competition of the swimming events at the 2019 Pan American Games was held on August 7, 2019 at the Villa Deportiva Nacional Videna cluster.

Records

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

World record	Caeleb Dressel (USA)	49.50	Gwangju, South Korea	July 26, 2019
Pan American Games record	Giles Smith (USA)	52.04	Toronto, Canada	July 16, 2015

Results

Heats

The first round was held on August 7.

Rank	Heat	Lane	Name	Nationality	Time	Notes
1	2	4	Luis Martínez	Guatemala	51.44	QA, GR, NR
2	2	5	Santiago Grassi	Argentina	51.92	QA
3	3	5	Matthew Josa	United States	52.28	QA
4	3	4	Vinicius Lanza	Brazil	53.11	QA
5	1	4	Tom Shields	United States	53.29	QA
6	3	6	Ben Hockin	Paraguay	53.43	QA
7	1	5	Long Gutiérrez	Mexico	54.05	QA
8	2	6	David Arias	Colombia	54.16	QA
9	1	3	Roberto Strelkov	Argentina	54.18	QB
10	3	3	Esnaider Reales	Colombia	54.19	QB
11	2	3	Mateo González Medina	Mexico	54.37	QB
12	1	6	Bryan Chavez Avendaño	Venezuela	54.85	QB
13	2	1	Javier Tang Juy	Peru	55.47	QB
14	3	2	Kael Yorke	Trinidad and Tobago	55.53	QB
15	2	2	N'Nhyn Fernander	Bahamas	55.65	QB
16	2	7	Bryan Alvaréz	Costa Rica	55.80	QB
17	1	7	Carlos Vasquez Moreno	Honduras	56.01
18	1	2	Gabriel Araya	Chile	56.13
19	3	1	Lázaro Martín Vergara	Cuba	56.17
20	1	1	Gustavo Gutierrez Lozano	Peru	56.20
21	3	7	Adriel Sanes	Virgin Islands	56.46
22	2	8	Lleyton Martin	Antigua and Barbuda	58.28
23	3	8	Jesse Washington	Bermuda	58.54

Final B

The B final was also held on August 7.

Rank	Lane	Name	Nationality	Time	Notes
9	4	Roberto Strelkov	Argentina	54.04
10	3	Mateo González Medina	Mexico	54.09
11	5	Esnaider Reales	Colombia	54.30
12	6	Bryan Chavez Avendaño	Venezuela	54.82
13	8	Bryan Alvaréz	Costa Rica	55.50
14	1	N'Nhyn Fernander	Bahamas	55.71
15	7	Kael Yorke	Trinidad and Tobago	55.90
16	2	Javier Tang Juy	Peru	56.06

Final A

The A final was also held on August 7.

Rank	Lane	Name	Nationality	Time	Notes
	2	Tom Shields	United States	51.59
	4	Luis Martínez	Guatemala	51.63
	6	Vinicius Lanza	Brazil	51.88
4	5	Santiago Grassi	Argentina	52.15
5	3	Matthew Josa	United States	52.22
6	1	Long Gutiérrez	Mexico	53.67
7	7	Ben Hockin	Paraguay	53.70
8	8	David Arias	Colombia	54.06

References

1. "Villa Deportiva Nacional, VIDENA". www.lima2019.pe. Lima Organizing Committee for the 2019 Pan and Parapan American Games (COPAL). 4 August 2019. Retrieved 4 August 2019.
2. "Swimming Schedule". www.lima2019.pe. Lima Organizing Committee for the 2019 Pan and Parapan American Games (COPAL). 4 August 2019. Retrieved 4 August 2019.
3. "Entries List". www.lima2019.pe. Lima Organizing Committee for the 2019 Pan and Parapan American Games (COPAL). 4 August 2019. Retrieved 4 August 2019.
4. "Start List" (PDF). www.lima2019.pe. ATOS. 5 August 2019. Retrieved 5 August 2019.
5. "HEATS RESULTS" (PDF). www.lima2019.pe. ATOS. 7 August 2019. Retrieved 7 August 2019.
6. Men's 100m Butterfly - B Final
7. Men's 100m Butterfly - A Final

• Swimming at the 2019 Pan American Games