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Light welterweight boxing · most active 2010s

Jonathan Alonso

23–2 · 24 recorded bouts · 2014–2022

Boxing record

23–2

Jonathan Alonso finished 30% of 23 wins inside the distance — the 9th percentile for light welterweight boxing, where the median is 56%. No reach is on record, so this page compares record rather than measurements.

20102020win v Nugzar Margvelashvili, 2014, decisionwin v Jose Gomez, 2014, kowin v Koba Karkashadze, 2015, decisionwin v Ken Alvarez, 2015, decisionwin v Jose L Guzman, 2015, kowin v Andrei Teixeira, 2015, kowin v Vladimir Cortez, 2015, kowin v Jherson Perez, 2016, decisionwin v Brian Jones, 2016, decisionwin v Koba Karkashadze, 2016, decisionwin v Ricardo Maldonado, 2016, decisionwin v Elvin Perez, 2017, kowin v Brayner Vazquez, 2017, decisionwin v Ignacio Mendoza, 2018, decisionwin v Giorgi Gviniashvili, 2018, kowin v Sylvain Chapelle, 2018, decisionwin v Rubén Rodríguez, 2018, decisionwin v Samuel Gonzalez, 2019, decisionloss v Alberto Puello, 2019, decisionwin v Ruben Garcia, 2019, kowin v Mohamed El Marcouchi, 2021, decisionwin v David Bency, 2021, decisionwin v Jose Angel Rosales Romero, 2022, decisionloss v Luis Enrique Romero, 2022, decision
WON ABOVE·LOST BELOW BAR = STOPPAGE·BROKEN BAR = SUBMISSION·TICK = DECISION 2014–2022

SOURCE·Jonathan Alonso — English Wikipedia (CC BY-SA 4.0)·derived figures computed here·REVIEWED 2026-07-07

How this record is compiled

  1. 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 record template — two different parsers, because reading MMA rows as a boxing table returns a fighter's boxing record in place of their real one.
  2. 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.
  3. 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.
  4. 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.
  5. Percentiles rank this fighter among the 175 light welterweight boxing fighters in the dataset — the most specific group of at least 30 that this fighter belongs to.

Sources, exclusions and known limits →

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.

Bout-by-bout recordAUG 2026
YearResultOpponentMethodRd
2022 W Jose Angel Rosales Romero Decision8
2022 L Luis Enrique Romero Decision8
2021 W Mohamed El Marcouchi Decision8
2021 W David Bency Decision6
2019 W Samuel Gonzalez Decision10
2019 L Alberto Puello Decision12
2019 W Ruben Garcia KO/TKO7
2018 W Ignacio Mendoza Decision10
2018 W Giorgi Gviniashvili KO/TKO7
2018 W Sylvain Chapelle Decision8
2018 W Rubén Rodríguez Decision8
2017 W Elvin Perez KO/TKO1
2017 W Brayner Vazquez Decision8
2016 W Jherson Perez Decision8
2016 W Brian Jones Decision6
2016 W Koba Karkashadze Decision6
2016 W Ricardo Maldonado Decision6
2015 W Koba Karkashadze Decision6
2015 W Ken Alvarez Decision6
2015 W Jose L Guzman KO/TKO2
2015 W Andrei Teixeira KO/TKO1
2015 W Vladimir Cortez KO/TKO1
2014 W Nugzar Margvelashvili Decision4
2014 W Jose Gomez KO/TKO3

1 of these opponents have their own page here.

SOURCE·Jonathan Alonso — English Wikipedia (CC BY-SA 4.0)·derived figures computed here·REVIEWED 2026-07-07

What is on record

Measurements
Reachnot recorded
Height68.9″ (175 cm)
StanceOrthodox
DivisionLight Welterweight Boxing
Most active decade2010s — 20 of 24 dated bouts
CountrySpain

Wikipedia carries no reach figure for Jonathan Alonso, so the reach-advantage comparison this site is built on cannot be computed. Everything below comes from the record instead.

2020 win vs Nugzar Margvelashvili (2014)win vs Jose Gomez (2014)win vs Koba Karkashadze (2015)win vs Ken Alvarez (2015)win vs Jose L Guzman (2015)win vs Andrei Teixeira (2015)win vs Vladimir Cortez (2015)win vs Jherson Perez (2016)win vs Brian Jones (2016)win vs Koba Karkashadze (2016)win vs Ricardo Maldonado (2016)win vs Elvin Perez (2017)win vs Brayner Vazquez (2017)win vs Ignacio Mendoza (2018)win vs Giorgi Gviniashvili (2018)win vs Sylvain Chapelle (2018)win vs Rubén Rodríguez (2018)win vs Samuel Gonzalez (2019)loss vs Alberto Puello (2019)win vs Ruben Garcia (2019)win vs Mohamed El Marcouchi (2021)win vs David Bency (2021)win vs Jose Angel Rosales Romero (2022)loss vs Luis Enrique Romero (2022)
winlossdraw / NC2014–2022

Record

Boxing record

23–2

25 bouts on record

Finish rate

30%

of wins ended inside the distance — light welterweight boxing median 56%, 9th percentile

By knockout: 7 (30%)By decision: 16 (70%)
  • By knockout 30%
  • By decision 70%

The career, bout by bout

24 recorded bouts from 2014 to 2022. Every incumbent shows this as a table you have to read; here it is as a shape you can see.

Career span

9y

2014–2022

Longest unbeaten run

18

without a loss — draws do not break it

Busiest year

2015

5 bouts

Recorded bouts

24

24 with a date

Standing questions

What this record does and does not say

What is Jonathan Alonso's record?
23–2 in boxing. That is the aggregate stated in the English Wikipedia infobox; the results table on the same article lists 24 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.

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Amit Sharma

Auckland real-estate agent and marketer. Builds free, sourced data tools.