Skip to main content
Kill The Body

and the head will die

Juan Díaz vs Lakva Sim — record, stats and common opponents compared

🇺🇸UNITED STATES

Juan Díaz

🇲🇳MONGOLIA

Lakva Sim

Juan Díaz (42-4) and Lakva Sim (21-4-1) 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.

Díaz

42

Wins21 KO · 50%

4

Losses

0

Draws48 tracked bouts

Sim

21

Wins18 KO · 86%

4

Losses

1

Draw26 tracked bouts

Head to Head

Díaz leads 1–0

Juan Díaz and Lakva Sim have met 1 time; Díaz leads 1–0.

Juan Díaz and Lakva Sim have met 1 time; Díaz leads 1–0.
Met2004Jul 17Series
Juan DíazFighter AWWon1–0W–L
Lakva SimFighter BLLost0–1W–L
ResultUD1Meeting

The Numbers

Díaz 4 · Sim 4 of 8 measurable rows
DíazSim
Record
42-4 (edge)21-4-1
Win %0–100%
91.3% (edge)
82.7%
Wins by knockoutmax 21
21 (edge)
18
KO rate0–100%
50%
85.71% (edge)
Stoppage rate (tracked wins)†0–100%
50%
86% (edge)
Times stopped†max 3
3
0 (edge)
Title reignsmax 4
4 (edge)
0
Bouts per year‡max 2.7
1.9
2.7 (edge)
Bouts trackedcoveragemax 48
48
26

† 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

Height+1″
Juan Díaz: 5′6″
Lakva Sim: 5′7″ (edge)
Reach+3″
Juan Díaz: 67″
Lakva Sim: 70″ (edge)
Age11 yrs apart
Juan Díaz: 43
Lakva Sim: 54
Stance
Juan Díaz: Orthodox
Lakva Sim: Orthodox

Juan Díaz left, Lakva Sim right, as everywhere on this page. Age is stated, not scored — neither age nor stance carries an edge.

How They Win

Tracked bouts only
Juan Díaz42 wins · from 48 tracked bouts

Juan Díaz: 42 tracked wins — 21 by KO/TKO (50%) and 21 on the cards (50%). Counted from 48 bouts Kill The Body has ingested.

21 by KO/TKO 50%21 on the cards 50%

Lakva Sim21 wins · from 26 tracked bouts

Lakva Sim: 21 tracked wins — 18 by KO/TKO (86%) and 3 on the cards (14%). Counted from 26 bouts Kill The Body has ingested.

18 by KO/TKO 86%3 on the cards 14%

One square per tracked win. Counted from the bouts Kill The Body has ingested for each fighter — Juan Díaz 48, Lakva Sim 26 — 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

Juan Díaz has lost two straight, after three straight wins. Díaz last boxed on Feb 28, 2026 — 233 days ago.WWWLL

Cardenas Sep 2014García Mar 2016Vasquez Aug 2016Cieślak Apr 2024Peralta Feb 20261.9 tracked bouts per year

Lakva Sim last boxed on Sep 16, 2005 — 7,703 days ago. Sim had won two straight since losing a decision to Juan Díaz.WWLWW

Navarez Dec 2003Callist Apr 2004Díaz Jul 2004Simmons Jun 2005Elder Sep 20052.7 tracked bouts per year

Common Questions

With the rows behind them
Have Juan Díaz and Lakva Sim ever fought each other?
Yes. Juan Díaz and Lakva Sim met once on July 17, 2004, and Juan Díaz won by UD.
The meeting

WJul 17, 2004 · Díaz · UD

Head to Head ↓
Who has the better record, Díaz or Sim?
Juan Díaz is 42-4 and Lakva Sim is 21-4-1. Juan Díaz has the higher win percentage.
Records · win %

Díaz42–491.3%

Sim21–4–182.7%

The Numbers ↓
Who has more knockouts, Díaz or Sim?
Juan Díaz has 21 knockout wins and Lakva Sim has 18. Juan Díaz has more.
Knockout wins · KO rate

Díaz2150%

Sim1885.7%

The Numbers ↓
Do Díaz and Sim have any common opponents?
Kill The Body's bout data shows no opponents that both Juan Díaz and Lakva Sim have faced.
Who is bigger, Díaz or Sim?
Lakva Sim is the taller fighter at 171 cm, 3 cm above the other. Lakva Sim also has the longer reach, by 8 cm.
Height · reach

Díaz168 cm170 cm reach

Sim171 cm178 cm reach

Tale of the Tape ↓
How much fight data does Kill The Body have on Díaz and Sim?
This comparison is drawn from 48 bouts tracked for Juan Díaz and 26 bouts tracked for Lakva Sim. Method and activity splits reflect those bouts only.
Bouts tracked · no edge

Díaz48bouts

Sim26bouts

How They Win ↓

Compare someone else

6 suggested matchups

Compare Díaz with…

Compare Sim with…

Someone else?

Release either fighter to put someone new in that slot — the other one stays put.