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Kill The Body

and the head will die

Jack Massey vs Jiri Svacina — record, stats and common opponents compared

🇬🇧UNITED KINGDOM

Jack Massey

Jiri Svacina

Jack Massey (23-4) and Jiri Svacina (0-17 across 17 tracked bouts) are compared on record, finishing method, activity, and common opponents on Kill The Body. The two have met once. They share 1 common opponent.

Massey

23

Wins13 KO · 57%

4

Losses

0

Draws27 tracked bouts

Svacina

Tracked record

0–17

counted from 17 bouts Kill The Body has ingested

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

Massey leads 1–0

Jack Massey and Jiri Svacina have met 1 time; Massey leads 1–0.

Jack Massey and Jiri Svacina have met 1 time; Massey leads 1–0.
Met2018Dec 22Series
Jack MasseyFighter AWWon1–0W–L
Jiri SvacinaFighter BLLost0–1W–L
ResultTKOR41Meeting

The Numbers

Massey 5 · Svacina 0 of 5 measurable rows
MasseySvacina
Record†
23-4 (edge)0-17
Win %0–100%
85.2% (edge)
0%
Wins by knockoutmax 13
13 (edge)
0
KO ratenot comparable
56.52%—
Stoppage rate (tracked wins)‡not comparable
57%—
Times stopped‡max 8
2 (edge)
8
Title reignslevelmax 0
0
0
Bouts per year§max 2.1
2.1 (edge)
1.8
Bouts trackedcoveragemax 27
27
17

† 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
Jack Massey: 6′4″
Jiri Svacina: No height on file
Agenot held
Jack Massey: 33
Jiri Svacina: No date of birth
Stance
Jack Massey: Orthodox
Jiri Svacina: Not recorded

Jack Massey left, Jiri Svacina right, as everywhere on this page. Age is stated, not scored — neither age nor stance carries an edge.

How They Win

Tracked bouts only
Jack Massey23 wins · from 27 tracked bouts

Jack Massey: 23 tracked wins — 13 by KO/TKO (57%) and 10 on the cards (43%). Counted from 27 bouts Kill The Body has ingested.

13 by KO/TKO 57%10 on the cards 43%

Jiri Svacina0 wins · from 17 tracked bouts

Jiri Svacina: no tracked wins in the 17 bouts Kill The Body has ingested.

No tracked wins for Svacina yet.

One square per tracked win. Counted from the bouts Kill The Body has ingested for each fighter — Jack Massey 27, Jiri Svacina 17 — not from a career-complete method table.

Common Opponents

1 shared

1 shared · even on 1

Massey

Opponent

Svacina

  • Jack Massey

    Loss, UD

    2019

    RiakporheEven

    Jiri Svacina

    Loss, TKO 2

    2017

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

Jack Massey had won one in a row before losing by stoppage to Cheavon Clarke. Massey last boxed on Jun 6, 2026 — 133 days ago.WWLWL

Ntere Jan 2024Chamberlain Jun 2024Opetaia Oct 2024Garcia Nov 2025Clarke Jun 20262.1 tracked bouts per year

Jiri Svacina last boxed on Oct 1, 2022 — 1,477 days ago. Svacina had lost 17 straight.LLLLL

Massey Dec 2018McCarthy Feb 2019McCarthy May 2019Hyde Sep 2019Kalinowski Oct 20221.8 tracked bouts per year

Common Questions

With the rows behind them
Have Jack Massey and Jiri Svacina ever fought each other?
Yes. Jack Massey and Jiri Svacina met once on December 22, 2018, and Jack Massey won by TKO in round 4.
The meeting

WDec 22, 2018 · Massey · TKO R4

Head to Head ↓
Who has the better record, Massey or Svacina?
Jack Massey is 23-4 and Jiri Svacina is 0-17 across the 17 bouts Kill The Body has tracked. Jack Massey has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
Records · win %

Massey23–485.2%

Svacina0–170%

The Numbers ↓
Who has more knockouts, Massey or Svacina?
Jack Massey has 13 knockout wins and Jiri Svacina has 0. Jack Massey has more.
Knockout wins · KO rate

Massey1356.5%

Svacina0

The Numbers ↓
Do Massey and Svacina have any common opponents?
Jack Massey and Jiri Svacina share 1 common opponent: Richard Riakporhe. Neither fighter fared better across the shared opponents overall.
Shared opponent

Richard RiakporheLL

Common Opponents ↓
How much fight data does Kill The Body have on Massey and Svacina?
This comparison is drawn from 27 bouts tracked for Jack Massey and 17 bouts tracked for Jiri Svacina. Method and activity splits reflect those bouts only.
Bouts tracked · no edge

Massey27bouts

Svacina17bouts

How They Win ↓

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