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Flyweight boxing · most active 2020s

Marlen Esparza

64″ reach · +1.62% reach advantage · 34th percentile

Boxing record

15–3

Marlen Esparza has a reach of 64″ against a height of 63″ — a reach advantage of +1.62%, short for flyweight boxing and the 34th percentile of the 50 compared here.

20102020UNFILEDwin v Karla Valenzuela, 2017, decisionwin v Aracely Palacios, 2017, decisionwin v Samantha Salazar, 2017, decisionwin v Rachel Sazoff, 2017win v Laetizia Campana, 2018loss v Seniesa Estrada, 2019win v Sonia Osorio, 2019, decisionwin v Jhosep Vizcaíno, 2019, decisionwin v Sulem Urbina, 2020, decisionwin v Anabel Ortiz, 2021, decisionwin v Ibeth Zamora Silva, 2021, decisionwin v Shelly Barnett, 2021, decisionwin v Eva Guzman, 2022, decisionwin v Naoko Fujioka, 2022, decisionwin v Gabriela Celeste Alaniz, 2023, decisionwin v Arely Muciño, 2024, decisionloss v Gabriela Celeste Alaniz, 2024, decisionloss v Yokasta Valle, 2025, decisionresult not stated v Opponent, no date on record
WON ABOVE·LOST BELOW BAR = STOPPAGE·BROKEN BAR = SUBMISSION·TICK = DECISION 2017–2025 · 1 UNDATED

SOURCE·Marlen Esparza — 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 50 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

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
2025 L Yokasta Valle Decision10
2024 W Arely Muciño Decision10
2024 L Gabriela Celeste Alaniz Decision10
2023 W Gabriela Celeste Alaniz Decision10
2022 W Eva Guzman Decision10
2022 W Naoko Fujioka Decision10
2021 W Anabel Ortiz Decision10
2021 W Ibeth Zamora Silva Decision10
2021 W Shelly Barnett Decision6
2020 W Sulem Urbina Decision8
2019 L Seniesa Estrada —9
2019 W Sonia Osorio Decision8
2019 W Jhosep Vizcaíno Decision8
2018 W Laetizia Campana —3
2017 W Karla Valenzuela Decision6
2017 W Aracely Palacios Decision6
2017 W Samantha Salazar Decision4
2017 W Rachel Sazoff —4
undated ? Opponent ——

4 of these opponents have their own page here.

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

Reach in context

Reach advantage

+1.62%

64″ reach on a 63″ frame

Compared against 50 flyweight boxing fighters. Median 3.09%.

-4.7%flyweight boxing reach advantage12.9%
Measurements
Reach64″ (162.6 cm)24th pct
Height63″ (160 cm)24th pct
StanceOrthodox
DivisionFlyweight Boxing
Most active decade2020s — 10 of 18 dated bouts
CountryUnited States

Record

Boxing record

15–3

18 bouts on record

Finish rate

7%

of wins ended inside the distance — flyweight boxing median 47%, 5th percentile

By knockout: 1 (7%)By decision: 14 (93%)
  • By knockout 7%
  • By decision 93%

The career, bout by bout

19 recorded bouts from 2017 to 2025. Every incumbent shows this as a table you have to read; here it is as a shape you can see.

2020 win vs Karla Valenzuela (2017)win vs Aracely Palacios (2017)win vs Samantha Salazar (2017)win vs Rachel Sazoff (2017)win vs Laetizia Campana (2018)loss vs Seniesa Estrada (2019)win vs Sonia Osorio (2019)win vs Jhosep Vizcaíno (2019)win vs Sulem Urbina (2020)win vs Anabel Ortiz (2021)win vs Ibeth Zamora Silva (2021)win vs Shelly Barnett (2021)win vs Eva Guzman (2022)win vs Naoko Fujioka (2022)win vs Gabriela Celeste Alaniz (2023)win vs Arely Muciño (2024)loss vs Gabriela Celeste Alaniz (2024)loss vs Yokasta Valle (2025)
winlossdraw / NC2017–2025

Career span

9y

2017–2025

Longest unbeaten run

10

without a loss — draws do not break it

Busiest year

2017

4 bouts

Recorded bouts

19

18 with a date

Standing questions

What this record does and does not say

What is Marlen Esparza's record?
15–3 in boxing. That is the aggregate stated in the English Wikipedia infobox; the results table on the same article lists 19 bouts individually.
How many of Marlen Esparza's bouts have no date?
1 of 19. The source lists them without a date this site can read, so they are printed with no year, sorted last, and drawn past the double rule in the record line rather than placed in the chronology. No year has been inferred for any of them.
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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Published by

Amit Sharma

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