Have Irineu Beato Costa Junior and Sergei Kuzmin ever fought each other?

Yes. Irineu Beato Costa Junior and Sergei Kuzmin met once on November 13, 2015, and Sergei Kuzmin won by KO in round 3.

Who has the better record, Junior or Kuzmin?

Irineu Beato Costa Junior is 2-9 across the 11 bouts Kill The Body has tracked and Sergei Kuzmin is 19-3. Sergei Kuzmin has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.

Who has more knockouts, Junior or Kuzmin?

Irineu Beato Costa Junior has 2 knockout wins and Sergei Kuzmin has 14. Sergei Kuzmin has more.

Do Junior and Kuzmin have any common opponents?

Irineu Beato Costa Junior and Sergei Kuzmin share 1 common opponent: David Price. Sergei Kuzmin fared better against 1 of them.

How much fight data does Kill The Body have on Junior and Kuzmin?

This comparison is drawn from 11 bouts tracked for Irineu Beato Costa Junior and 23 bouts tracked for Sergei Kuzmin. Method and activity splits reflect those bouts only.

Irineu Beato Costa Junior vs Sergei Kuzmin — Records, Stats & Common Opponents

Irineu Beato Costa Junior

🇷🇺HEAVYWEIGHT

Sergei Kuzmin

Irineu Beato Costa Junior (2-9 across 11 tracked bouts) and Sergei Kuzmin (19-3) are compared on record, finishing method, activity, and common opponents on Kill The Body. The two have met once. They share 1 common opponent.

Junior

Tracked record

2–9

counted from 11 bouts Kill The Body has ingested

Kuzmin

Wins14 KO · 74%

Losses

Draws23 tracked bouts

Heads up: at least one of these records is a tracked record — the wins and losses Kill The Body has ingested so far, not an independently verified career total. Treat the comparison as a read on the bouts we hold, not a settled ledger.

Head to Head

Kuzmin leads 1–0

Irineu Beato Costa Junior and Sergei Kuzmin have met 1 time; Kuzmin leads 1–0.
Met	2015Nov 13	Series
Irineu Beato Costa JuniorFighter A	LLost	0–1W–L
Sergei KuzminFighter B	WWon	1–0W–L
Result	KOR3Kuzmin vs Junior	1Meeting

Kuzmin vs Junior · Nov 13, 2015

The Numbers

Junior 1 · Kuzmin 5 of 6 measurable rows

JuniorEdge = longer wingKuzmin

Record^†: 2-919-3 (edge)
Win %0–100%: 18.2%
86.4% (edge)
Wins by knockoutmax 14: 2
14 (edge)
KO ratenot comparable: —73.68%
Stoppage rate (tracked wins)^‡0–100%: 100% (edge)
74%
Times stopped^‡max 7: 7
1 (edge)
Title reignslevelmax 0: 0
0
Bouts per year^§max 2.1: 1.4
2.1 (edge)
Bouts trackedcoveragemax 23: 11
23

† One or both records are tracked, not career-verified. · ‡ Counted from bouts Kill The Body has ingested, not a career total. · § Across each fighter's tracked career span. · Bars are scaled per row — percentages on 0–100, counts against the larger of the two. Every figure is also printed as text.

Tale of the Tape

Heightnot held: Irineu Beato Costa Junior: No height on file; Sergei Kuzmin: 6′3″
Reachnot held: Irineu Beato Costa Junior: No reach on file; Sergei Kuzmin: 75″
Agenot held: Irineu Beato Costa Junior: No date of birth; Sergei Kuzmin: 39

Irineu Beato Costa Junior left, Sergei Kuzmin right, as everywhere on this page. Age is stated, not scored: younger is not better.

How They Win

Tracked bouts only

Irineu Beato Costa Junior2 wins · from 11 tracked bouts

2 by KO/TKO 100%

Sergei Kuzmin19 wins · from 23 tracked bouts

14 by KO/TKO 74%5 on the cards 26%

One square per tracked win. Counted from the bouts Kill The Body has ingested for each fighter — Irineu Beato Costa Junior 11, Sergei Kuzmin 23 — not from a career-complete method table.

Common Opponents

1 shared

1 shared · Kuzmin better on 11 shared · Sergei Kuzmin better on 1

JuniorIrineu Beato Costa Junior

Opponent

KuzminSergei Kuzmin

Irineu Beato Costa Junior
Loss, TKO 6
2015Feb 2015
PriceDavid PriceUnited Kingdom 25–7Kuzmin betterSergei Kuzmin better — 1–0 to 0–1
Sergei Kuzmin
Win, RTD 4
2018Sep 2018

Both sides are set at the same size on purpose. Kill The Body does not score a second-round knockout above a split decision — the edge counts losses first and wins as the tiebreak, and the rest is yours to argue. Shared opponents are matched on fighter identity, not on name, so two different fighters with the same name never merge into one row.

Current Form

Oldest left · newest right

Irineu Beato Costa Junior last boxed on Dec 15, 2018 — 2,874 days ago. Junior had lost nine straight.LLLLL

Whyte Aug 2015Kuzmin Nov 2015Wallin Apr 2016Plechko Aug 2018Zakhozhyi Dec 20181.4 tracked bouts per year

Sergei Kuzmin had won four in a row before losing by stoppage to Murad Khalidov. Kuzmin last boxed on Oct 6, 2025 — 387 days ago.WWWWL

Macedo Nov 2021Lartey May 2022Fick Sep 2022Montes Jul 2023Khalidov Oct 20252.1 tracked bouts per year

Common Questions

With the rows behind them

Have Irineu Beato Costa Junior and Sergei Kuzmin ever fought each other?: Yes. Irineu Beato Costa Junior and Sergei Kuzmin met once on November 13, 2015, and Sergei Kuzmin won by KO in round 3.
Who has the better record, Junior or Kuzmin?: Irineu Beato Costa Junior is 2-9 across the 11 bouts Kill The Body has tracked and Sergei Kuzmin is 19-3. Sergei Kuzmin has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
Who has more knockouts, Junior or Kuzmin?: Irineu Beato Costa Junior has 2 knockout wins and Sergei Kuzmin has 14. Sergei Kuzmin has more.
Do Junior and Kuzmin have any common opponents?: Irineu Beato Costa Junior and Sergei Kuzmin share 1 common opponent: David Price. Sergei Kuzmin fared better against 1 of them.
How much fight data does Kill The Body have on Junior and Kuzmin?: This comparison is drawn from 11 bouts tracked for Irineu Beato Costa Junior and 23 bouts tracked for Sergei Kuzmin. Method and activity splits reflect those bouts only.

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Irineu Beato Costa Junior vs Sergei Kuzmin — record, stats and common opponents compared

Irineu Beato Costa Junior

Sergei Kuzmin