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Joseph Diaz vs Roberto Castaneda — record, stats and common opponents compared

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Joseph Diaz

Roberto Castaneda

Joseph Diaz (34-10-1) and Roberto Castaneda (0-7 across 7 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.

Diaz

34

Wins15 KO · 44%

10

Losses

1

Draw46 tracked bouts

Castaneda

Tracked record

0–7

counted from 7 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

Diaz leads 1–0

Joseph Diaz and Roberto Castaneda have met 1 time; Diaz leads 1–0.

Joseph Diaz and Roberto Castaneda have met 1 time; Diaz leads 1–0.
Met2014Nov 13Series
Joseph DiazFighter AWWon1–0W–L
Roberto CastanedaFighter BLLost0–1W–L
ResultRTDR41Meeting

The Numbers

Diaz 6 · Castaneda 0 of 6 measurable rows
DiazCastaneda
Record†
34-10-1 (edge)0-7
Win %0–100%
76.7% (edge)
0%
Wins by knockoutmax 15
15 (edge)
0
KO ratenot comparable
44.12%—
Stoppage rate (tracked wins)‡not comparable
43%—
Times stopped‡max 6
1 (edge)
6
Title reignsmax 1
1 (edge)
0
Bouts per year§max 3.4
3.4 (edge)
0.9
Bouts trackedcoveragemax 46
46
7

† 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
Joseph Diaz: 5′6″
Roberto Castaneda: No height on file
Reachnot held
Joseph Diaz: 64″
Roberto Castaneda: No reach on file
Agenot held
Joseph Diaz: 33
Roberto Castaneda: No date of birth
Stance
Joseph Diaz: Southpaw
Roberto Castaneda: Not recorded

Joseph Diaz left, Roberto Castaneda right, as everywhere on this page. Age is stated, not scored — neither age nor stance carries an edge.

How They Win

Tracked bouts only
Joseph Diaz35 wins · from 46 tracked bouts

Joseph Diaz: 35 tracked wins — 15 by KO/TKO (43%) and 20 on the cards (57%). Counted from 46 bouts Kill The Body has ingested.

15 by KO/TKO 43%20 on the cards 57%

Roberto Castaneda0 wins · from 7 tracked bouts

Roberto Castaneda: no tracked wins in the 7 bouts Kill The Body has ingested.

No tracked wins for Castaneda yet.

One square per tracked win. Counted from the bouts Kill The Body has ingested for each fighter — Joseph Diaz 46, Roberto Castaneda 7 — not from a career-complete method table.

Common Opponents

1 shared

1 shared · even on 1

Diaz

Opponent

Castaneda

  • Joseph Diaz

    Loss, UD

    2018

    Jr.Even

    Roberto Castaneda

    Loss, KO 3

    2012

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

Joseph Diaz has lost three straight, after one straight win. Diaz last boxed on Jun 19, 2026 — 122 days ago.LWLLL

Montoya Nov 2024Diaz Jun 2025Prograis Aug 2025Rocha Mar 2026Sylve Jun 20263.4 tracked bouts per year

Roberto Castaneda last boxed on Jun 1, 2019 — 2,697 days ago. Castaneda had lost seven straight.LLLLL

Rosas Aug 2013Magdaleno Feb 2014Diaz Nov 2014Guzman Nov 2018Tapales Jun 20190.9 tracked bouts per year

Common Questions

With the rows behind them
Have Joseph Diaz and Roberto Castaneda ever fought each other?
Yes. Joseph Diaz and Roberto Castaneda met once on November 13, 2014, and Joseph Diaz won by RTD in round 4.
The meeting

WNov 13, 2014 · Diaz · RTD R4

Head to Head ↓
Who has the better record, Diaz or Castaneda?
Joseph Diaz is 34-10-1 and Roberto Castaneda is 0-7 across the 7 bouts Kill The Body has tracked. Joseph Diaz has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
Records · win %

Diaz34–10–176.7%

Castaneda0–70%

The Numbers ↓
Who has more knockouts, Diaz or Castaneda?
Joseph Diaz has 15 knockout wins and Roberto Castaneda has 0. Joseph Diaz has more.
Knockout wins · KO rate

Diaz1544.1%

Castaneda0

The Numbers ↓
Do Diaz and Castaneda have any common opponents?
Joseph Diaz and Roberto Castaneda share 1 common opponent: Gary Russell Jr.. Neither fighter fared better across the shared opponents overall.
Shared opponent

Gary Russell Jr.LL

Common Opponents ↓
How much fight data does Kill The Body have on Diaz and Castaneda?
This comparison is drawn from 46 bouts tracked for Joseph Diaz and 7 bouts tracked for Roberto Castaneda. Method and activity splits reflect those bouts only.
Bouts tracked · no edge

Diaz46bouts

Castaneda7bouts

How They Win ↓

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