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Kill The Body

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Joel Casamayor vs Roberto Sierra — record, stats and common opponents compared

🇨🇺CUBA

Joel Casamayor

Roberto Sierra

Joel Casamayor (38-6-1) and Roberto Sierra (0-1 across 1 tracked bout) are compared on record, finishing method, activity, and common opponents on Kill The Body. The two have met once. They share no common opponents in Kill The Body's bout data.

Casamayor

38

Wins22 KO · 58%

6

Losses

1

Draw45 tracked bouts

Sierra

Tracked record

0–1

counted from 1 bout 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

Casamayor leads 1–0

Joel Casamayor and Roberto Sierra have met 1 time; Casamayor leads 1–0.

Joel Casamayor and Roberto Sierra have met 1 time; Casamayor leads 1–0.
Met1996Dec 14Series
Joel CasamayorFighter AWWon1–0W–L
Roberto SierraFighter BLLost0–1W–L
ResultKOR11Meeting

The Numbers

Casamayor 4 · Sierra 1 of 5 measurable rows
CasamayorSierra
Record†
38-6-1 (edge)0-1
Win %0–100%
85.6% (edge)
0%
Wins by knockoutmax 22
22 (edge)
0
KO ratenot comparable
57.89%—
Stoppage rate (tracked wins)‡not comparable
58%—
Times stopped‡max 2
2
1 (edge)
Title reignsmax 6
6 (edge)
0
Bouts per year§not comparable
3—
Bouts trackedcoveragemax 45
45
1

† 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
Joel Casamayor: 5′7″
Roberto Sierra: No height on file
Reachnot held
Joel Casamayor: 69″
Roberto Sierra: No reach on file
Agenot held
Joel Casamayor: 55
Roberto Sierra: No date of birth
Stance
Joel Casamayor: Southpaw
Roberto Sierra: Not recorded

Joel Casamayor left, Roberto Sierra right, as everywhere on this page. Age is stated, not scored — neither age nor stance carries an edge.

How They Win

Tracked bouts only
Joel Casamayor38 wins · from 45 tracked bouts

Joel Casamayor: 38 tracked wins — 22 by KO/TKO (58%) and 16 on the cards (42%). Counted from 45 bouts Kill The Body has ingested.

22 by KO/TKO 58%16 on the cards 42%

Roberto Sierra0 wins · from 1 tracked bout

Roberto Sierra: no tracked wins in the 1 bout Kill The Body has ingested.

No tracked wins for Sierra yet.

One square per tracked win. Counted from the bouts Kill The Body has ingested for each fighter — Joel Casamayor 45, Roberto Sierra 1 — not from a career-complete method table.

Common Opponents

No opponents in common across the bouts Kill The Body has tracked for these two.

Current Form

Oldest left · newest right

Joel Casamayor last boxed on Nov 12, 2011 — 5,458 days ago. Casamayor had won one in a row before losing by stoppage to Timothy Bradley.LWLWL

Méndez Sep 2008Davis Nov 2009Guerrero Jul 2010Leyva Mar 2011Bradley Nov 20113 tracked bouts per year

Roberto Sierra last boxed on Dec 14, 1996 — 10,904 days ago. Sierra had lost the most recent, to Joel Casamayor.L

Casamayor Dec 1996

Common Questions

With the rows behind them
Have Joel Casamayor and Roberto Sierra ever fought each other?
Yes. Joel Casamayor and Roberto Sierra met once on December 14, 1996, and Joel Casamayor won by KO in round 1.
The meeting

WDec 14, 1996 · Casamayor · KO R1

Head to Head ↓
Who has the better record, Casamayor or Sierra?
Joel Casamayor is 38-6-1 and Roberto Sierra is 0-1 across the 1 bout Kill The Body has tracked. Joel Casamayor has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
Records · win %

Casamayor38–6–185.6%

Sierra0–10%

The Numbers ↓
Who has more knockouts, Casamayor or Sierra?
Joel Casamayor has 22 knockout wins and Roberto Sierra has 0. Joel Casamayor has more.
Knockout wins · KO rate

Casamayor2257.9%

Sierra0

The Numbers ↓
Do Casamayor and Sierra have any common opponents?
Kill The Body's bout data shows no opponents that both Joel Casamayor and Roberto Sierra have faced.
How much fight data does Kill The Body have on Casamayor and Sierra?
This comparison is drawn from 45 bouts tracked for Joel Casamayor and 1 bout tracked for Roberto Sierra. Method and activity splits reflect those bouts only.
Bouts tracked · no edge

Casamayor45bouts

Sierra1bout

How They Win ↓

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