Flyweight · United States

McWilliams Arroyo

21-4-0, 1 NC 16 KO · 2010–2021

McWilliams Arroyo is a flyweight boxer from United States, born Dec 5, 1985. Record 21-4-0, 1 NC with 16 knockouts over 2010–2021. McWilliams Arroyo last fought Julio Cesar Martinez on Nov 19, 2021 and the bout was ruled a no contest.

Also: Маквільямс Арройо · ماك وليامز أرويو · ماك وليامز ارويو
+3 moreمک‌ویلیامز آرویو · マックウィリアムズ・アローヨ · McWilliams Arroyo Acevedo
BornDec 5, 1985
Country🇺🇸 United States
StanceOrthodox
Height163 cm
Reach162.5 cm
DebutFeb 27, 2010
Career2010–2021
Rounds boxed152
KO share76%
Born inCeiba, Puerto Rico
TitlesWBC interim flyweight title 2021
Boxerbook rating1969 ± 166 · inactive since Feb 2021Why here ›
Confirmed bouts8 of 26 · 6 official

Record and next fight

Record
21-4-0, 1 NC, 16 KOs · 2010–2021
Next fight
No next fight confirmed

Last result

NC
Julio Cesar Martinez 🇲🇽
For WBC flyweight title
NC 3/12 · SNHU Arena, Manchester, New Hampshire, 🇺🇸
2021-11-19 ›
✓✓ two sources

The record

26 bouts, 2010–2021, newest first. Records under each bout are both boxers going in.

Bouts by source: English Wikipedia · 26, Wikipedia (ja) · 6, California State Athletic Commission — Results (archive) · 3, IBF/USBA Results · 2, Nevada State Athletic Commission — Results · 1

NC
Julio Cesar Martinez 🇲🇽
For WBC flyweight title
NC 3/12 · SNHU Arena, Manchester, New Hampshire, 🇺🇸
Arroyo 21-4-0 · Martinez 19-3-0
2021-11-19 ›
✓✓ two sources
W
Abraham Rodriguez
Won vacant WBC interim flyweight title
TKO 5/12 · Hard Rock Stadium, Miami Gardens, Florida, 🇺🇸
Arroyo 20-4-0 · Rodriguez —
2021-02-27 ›
✓ one source
W
Juan Gabriel Medina
RTD 5/10 · Coliseo Pedrin Zorrilla, San Juan, 🇵🇷
Arroyo 19-4-0 · Medina —
2019-12-07 ›
✓ one source
W
Carlos Buitrago 🇳🇮
For WBO Latino flyweight title
UD 10/10 · Coliseo Roger L. Mendoza, Caguas, 🇵🇷
Arroyo 18-4-0 · Buitrago 32-4-1
2019-06-15 ›
✓✓ two sources
W
Carlos Maldonado
Won vacant WBO Latino flyweight title
UD 10/10 · Complejo Ferial, Ponce, 🇵🇷
Arroyo 17-4-0 · Maldonado —
2019-02-16 ›
✓ one source
L
Kazuto Ioka 🇯🇵
For WBC Silver super-flyweight title
UD 10/10 · The Forum, Inglewood, 🇺🇸
Arroyo 17-3-0 · Ioka 22-1-0
2018-09-08 ›
official ★
W
Carlos Cuadras 🇲🇽
For vacant WBC Silver super flyweight title
MD 10/10 · The Forum, Inglewood, 🇺🇸
Arroyo 16-3-0 · Cuadras 39-2-1
2018-02-24 ›
official ★
L
Román González 🇳🇮
For WBC and The Ring flyweight titles
UD 12/12 · The Forum, Inglewood, 🇺🇸
Arroyo 16-2-0 · González 44-0-0
2016-04-23 ›
official ★
W
Victor Ruiz
TKO 3/10 · Coliseo Jose Miguel Agrelot, San Juan, 🇵🇷
Arroyo 15-2-0 · Ruiz —
2015-04-11 ›
✓ one source
L
Amnat Ruenroeng 🇹🇭
For IBF flyweight title
SD 12/12 · Liptapanlop Hall, Nakornratchasima City, 🇹🇭
Arroyo 15-1-0 · Ruenroeng 13-0-0
2014-09-10 ›
official ★
W
Froilan Saludar 🇵🇭
IBF Flyweight
TKO 2/12 · Coliseo Rubén Rodríguez, Ruben Rodriguez Coliseum, 🇵🇷
Arroyo 14-1-0 · Saludar 19-0-1
2014-06-19 ›
official ★
W
Jose Miguel Tamayo
Won WBC interim Latino flyweight title
TKO 4/10 · Coliseo Rubén Rodríguez, Bayamón, 🇵🇷
Arroyo 13-1-0 · Tamayo —
2013-02-02 ›
✓ one source
W
Ronald Ramos
TKO 5/12 · Hotel San Juan, Isla Verde, 🇵🇷
Arroyo 12-1-0 · Ramos —
2012-09-27 ›
✓ one source
W
Rigoberto Casillas
TKO 7/10 · Palacio de los Deportes, Mayagüez, 🇵🇷
Arroyo 11-1-0 · Casillas —
2012-06-09 ›
✓ one source
W
Luis Maldonado
UD 10/10 · Roberto Clemente Coliseum, San Juan, 🇵🇷
Arroyo 10-1-0 · Maldonado —
2012-03-10 ›
✓ one source
W
Gilberto Mendoza
RTD 3/6 · Coliseo Luis Aymat, San Sebastián, 🇵🇷
Arroyo 9-1-0 · Mendoza —
2012-02-03 ›
✓ one source
W
Lorenzo Trejo 🇲🇽
TKO 2/8 · Coliseo Tomas Dones, Fajardo, 🇵🇷
Arroyo 8-1-0 · Trejo —
2011-07-01 ›
✓ one source
W
Rigoberto Casillas
TKO 7/8 · Coliseo Pedrin Zorrilla, San Juan, 🇵🇷
Arroyo 7-1-0 · Casillas —
2011-05-06 ›
✓ one source
W
Erickson Martell
TKO 5/8 · Coliseo Rubén Rodríguez, Bayamón, 🇵🇷
Arroyo 6-1-0 · Martell —
2011-04-01 ›
✓ one source
W
Manuel Galaviz
TKO 1/6 · Coliseo Rubén Rodríguez, Bayamón, 🇵🇷
Arroyo 5-1-0 · Galaviz —
2011-02-05 ›
✓ one source
Show all 26 bouts
W
Cesar Grajeda
TKO 1/6 · MGM Grand Garden Arena, Las Vegas, 🇺🇸
Arroyo 4-1-0 · Grajeda —
2010-11-06 ›
official ★
W
Jovany Fuentes
UD 6/6 · Coliseo Mario 'Quijote' Morales, Guaynabo, 🇵🇷
Arroyo 3-1-0 · Fuentes —
2010-08-28 ›
✓ one source
L
Takashi Okada
UD 4/4 · Madison Square Garden, New York City, New York, 🇺🇸
Arroyo 3-0-0 · Okada —
2010-06-12 ›
✓ one source
W
Samuel Gutiérrez
TKO 2/4 · Coliseo Rubén Rodríguez, Bayamón, 🇵🇷
Arroyo 2-0-0 · Gutiérrez —
2010-05-29 ›
✓ one source
W
Francisco Rosario
KO 3/4 · Coliseo Tomás Dones, Fajardo, 🇵🇷
Arroyo 1-0-0 · Rosario —
2010-04-17 ›
✓ one source
W
Eliecer Sánchez
KO 1/4 · Coliseo Rubén Rodríguez, Bayamón, 🇵🇷
Arroyo 0-0-0 · Sánchez —
2010-02-27 ›
✓ one source

Amateur career

🥇 World Championships 2009 flyweight🥇 Pan American Games 2007 flyweight

2009 World Amateur Boxing Championships – Men's flyweight

FinalWNyambayaryn Tögstsogt 🇲🇳18:2
Semi-finalWRonny Beblik 🇩🇪9:7
Quarter-finalWYampier Hernández 🇨🇺6:2
Round of 16WNorbert Kalucza 🇭🇺RSC
Round of 32WYoon Kyoung Min 🇰🇷RSC

2008 Summer Olympics – Men's flyweight

Quarter-finalLAndry Laffita 🇨🇺2:11
Round of 16WNorbert Kalucza 🇭🇺14:6

7 amateur bouts at major tournaments, from the tournament articles on English Wikipedia (CC BY-SA). Not part of the professional record.

Ratings now

Not in any current ranking.

World titles

No world title reigns recorded.

Facts

What is McWilliams Arroyo's record?
McWilliams Arroyo's professional record is 21-4-0, 1 NC with 16 knockouts.
When is McWilliams Arroyo's next fight?
No next fight is confirmed as of 17 Oct 2026.
Who did McWilliams Arroyo fight last?
McWilliams Arroyo last fought Julio Cesar Martinez on Nov 19, 2021 and the bout was ruled a no contest.

Sources

Boxerbook ID 11998 · permanent link boxerbook.com/id/11998. Wikidata (CC0), English Wikipedia (CC BY-SA). Last fetched: 2026-10-12. Spot a mistake? Every bout page has a link to report it.

Wikipedia ↗Wikidata ↗