McWilliams Arroyo
64″ reach · 0% reach advantage · 9th percentile
21–4
McWilliams Arroyo has a reach of 64″ against a height of 64″ — a reach advantage of 0%, unusually short for super flyweight boxing and the 9th percentile of the 35 compared here.
SOURCE·McWilliams Arroyo — English Wikipedia (CC BY-SA 4.0)·derived figures computed here·REVIEWED 2026-07-07
How this record is compiled
- Measurements come from the fighter's English Wikipedia infobox; the bout list is parsed from the results table on the same article, read on 2026-07-07. Boxing tables are read by header name and MMA records by the fixed column order of the
MMA recordtemplate — two different parsers, because reading MMA rows as a boxing table returns a fighter's boxing record in place of their real one. - A bout enters the ledger with whatever fields the source states: result, opponent, method, round, year. Any field the source leaves empty stays empty here. A date that cannot be established is left blank rather than inferred, and the bout is still counted.
- A no contest is counted and printed as a no contest. It is never folded into the wins, the losses or the draws, and it never disappears to make a total balance.
- Where the article's infobox total disagrees with its own results table, both figures are published and each is labelled with where it came from. Nothing is averaged and nothing is reconciled against a second database.
- Percentiles rank this fighter among the 35 super flyweight boxing fighters in the dataset — the most specific group of at least 30 that this fighter belongs to.
reach advantage = (reach − height) ÷ height × 100
Bout record
Every bout the article's own results table lists, in order. A dash is a field the source leaves empty — it is not a zero and it is not a guess.
| Year | Result | Opponent | Method | Rd |
|---|---|---|---|---|
| 2021 | ? | Julio Cesar Martínez | — | 3 |
| 2021 | W | Abraham Rodriguez | KO/TKO | 5 |
| 2019 | W | Juan Gabriel Medina | KO/TKO | 5 |
| 2019 | W | Carlos Buitrago | Decision | 10 |
| 2019 | W | Carlos Maldonado | Decision | 10 |
| 2018 | L | Kazuto Ioka | Decision | 10 |
| 2018 | W | Carlos Cuadras | — | 10 |
| 2016 | L | Román González | Decision | 12 |
| 2015 | W | Victor Ruiz | KO/TKO | 3 |
| 2014 | L | Amnat Ruenroeng | — | 12 |
| 2014 | W | Froilan Saludar | KO/TKO | 2 |
| 2013 | W | Jose Miguel Tamayo | KO/TKO | 4 |
| 2012 | W | Ronald Ramos | KO/TKO | 5 |
| 2012 | W | Rigoberto Casillas | KO/TKO | 7 |
| 2012 | W | Luis Maldonado | Decision | 10 |
| 2012 | W | Gilberto Mendoza | — | 3 |
| 2011 | W | Lorenzo Trejo | KO/TKO | 2 |
| 2011 | W | Rigoberto Casillas | KO/TKO | 7 |
| 2011 | W | Erickson Martell | KO/TKO | 5 |
| 2011 | W | Manuel Galaviz | KO/TKO | 1 |
| 2010 | W | Cesar Grajeda | KO/TKO | 1 |
| 2010 | W | Jovany Fuentes | Decision | 6 |
| 2010 | L | Takashi Okada | — | 4 |
| 2010 | W | Samuel Gutiérrez | — | 2 |
| 2010 | W | Francisco Rosario | KO/TKO | 3 |
| 2010 | W | Eliecer Sánchez | — | 1 |
6 of these opponents have their own page here.
SOURCE·McWilliams Arroyo — English Wikipedia (CC BY-SA 4.0)·derived figures computed here·REVIEWED 2026-07-07
Reach in context
Reach advantage
0%
64″ reach on a 64″ frame
Compared against 35 super flyweight boxing fighters. Median 1.68%.
| Reach | 64″ (162.6 cm) | 17th pct |
|---|---|---|
| Height | 64″ (162.6 cm) | 34th pct |
| Stance | Orthodox | |
| Division | Super Flyweight Boxing competed at 2: flyweight, super flyweight — compared here against the last | |
| Most active decade | 2010s — 24 of 26 dated bouts | |
| Country | United States |
Record
Boxing record
21–4
26 bouts on record
Finish rate
76%
of wins ended inside the distance — super flyweight boxing median 57%, 89th percentile
The career, bout by bout
26 recorded bouts from 2010 to 2021. Every incumbent shows this as a table you have to read; here it is as a shape you can see.
Career span
12y
2010–2021
Longest unbeaten run
12
without a loss — draws do not break it
Busiest year
2010
6 bouts
Recorded bouts
26
26 with a date
Closest in build
super flyweight boxing fighters with the nearest reach advantage.
- David Jiménez0% 64″ reach · 9th pct
- Rodolfo Blanco0% 64″ reach · 9th pct
- Ángel Acosta0% 64″ reach · 9th pct
- Joahnys Argilagos+0.06% 65″ reach · 20th pct
- Satoshi Iida+0.61% 65.4″ reach · 23rd pct
- Francisco Rodríguez Jr.+1.54% 65″ reach · 26th pct
- McJoe Arroyo+1.54% 65″ reach · 26th pct
- Tomonobu Shimizu+1.55% 67″ reach · 31st pct
What this record does and does not say
- What is McWilliams Arroyo's record?
- 21–4 in boxing. That is the aggregate stated in the English Wikipedia infobox; the results table on the same article lists 26 bouts individually.
- Does a no contest change a record here?
- No. A no contest is not a win, a loss or a draw, and it is never folded into one. It is counted and printed separately, so a 20–0 record with two no contests is shown as exactly that rather than as 22–0 or as 20–0 with the no contests dropped. The same applies to a bout overturned after the fact where the source records the change.
- What happens when sources disagree about a fight?
- This site publishes one source — the fighter's English Wikipedia article, read on the date printed under every table — and it does not silently reconcile that against anyone else's database. Where the article's own infobox total and its own results table disagree, both are shown and the page says which one each figure came from. Nothing is averaged, and no field is filled in from a second source to make a total balance.
Where this record leads
The 115 super flyweight boxing fighters this record is ranked against, and the distribution Arroyo sits inside.
115 FIGHTERS 2010s boxing24 of these bouts fall in the 2010s. This is what the rest of that decade's records look like.
730 FIGHTERS McWilliams Arroyo vs Román GonzálezA bout both records confirm — set out side by side, with every opponent the two men have in common.
2016 Longest unbeaten runsMcWilliams Arroyo went 12 without a loss. This is where that sits against every run on the site.
LEADERBOARD