TournamentSan Diego XVIII Gi - Mar 2026

[ grey / Youth ]

Zion Ko

Jits

1,357Prospect

~43 Jits to Advanced

-850Last event: Oct 26, 2025

#39,861

Overall

Top 44%

Percentile

#13,100

grey Belt

Record

9-1243% Win Rate

9 Wins12 Losses

0-5 Last 5

Trophy Case

2 GoldGRAPPLING-X 2

GRAPPLING-X 3/9/ LAS GIMar 9, 2025

GRAPPLING-X 3/9/ LAS NO-GIMar 9, 2025

Fighter Intelligence

8 Tournaments

Medals

3Medals

across 8 tournaments

Gold 2

Silver 1

Bronze 0

67% Gold Rate

Belt Avg 21%

What this means67% of tournament entries result in gold — 46 points above the belt average. Elite podium consistency — this fighter dominates their brackets.

Finishing Ability

67%

Subs

Submission 6

Points 3

Other 0

Belt Avg 44%

+23 pts vs belt avg

What this means67% of wins by submission — 23 points above the belt average. This fighter has elite finishing ability for their rank.

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Advanced Analytics

AI Calculated

Growth Trajectory

DVI

Building New Foundation

Building a new foundation

Growing faster than 52% of peers

Win Quality

Consistent

Clutch Score: -4.4%

Close Wins

Losses

21 matches analyzed

Format Split

BALANCED

13 Gi8 NoGi

6W-7L46%

NoGi

3W-5L38%

Sub Rate

Gi 31%NoGi 25%

9% win rate delta — Gi stronger

Segment Analysis

Malegrey BeltAges 10-1129,089 Fighters

Comparing to 29,089 grey belt fighters

Win Rate

43%avg 49%

AVG

-6 pts vs avg

Sub Rate

67%avg 44%

AVG

+23 pts vs avg

Gold Rate

13%avg 21%

AVG

-8 pts vs avg

What This Means

Win rate tracks at 43% for grey belt. 21 matches and counting.

Tale of the Tape

Next Tournaments

JJWL

San Diego Xviii GiMar 28, 2026

MaleGi · Pre Teen 2015-2016 · grey·60-69

#	Name	JITS	Academy	Record
1	Jackson Kisor	7,491	Artemis Jiu Jitsu	38-5
2	Kaian Asgari	5,943	Alliance Jiu Jitsu San Diego	69-24
3	Dominic Hernandez	5,723	Sektor Jiu Jitsu	51-12
4	Christopher Beserra	5,702	Sektor Jiu Jitsu	31-5
5	Aamir Jones	5,542	Riverside Submission	45-4
6	Idris Khan	5,230	Art of Jiu Jitsu	31-13
7	Lemar Saidy	4,282	Atos HQ	22-3
8	Tarius Gutierrez	3,933	Delano Jiu Jitsu Club	39-6
9	Cameron Hoashi	3,520	Meraki BJJ	36-19
10	Jayden Rosales	3,224	Xfit Combat Sports	13-1
11	Brody Tierney	2,677	Alliance Jiu Jitsu South Bay	4-1
12	Jayden Verduzco	2,502	Gracie Humaita South Bay	18-16
13	Micah White	2,469	Gracie Barra Simi Valley	7-8
14	Devin Wong	2,450	Mat Marauders	22-13
15	Thomas Witt	2,437	Carlson Gracie Irvine	7-5
16	Josh Miner	2,221	Ufc Huntington Beach	10-6
17	Samuel Waddell	2,207	Alpine Jiu Jitsu	8-9
18	Seamus Sisco	2,191	Carlson Gracie Temecula	6-6
19	Noah Lopez	1,596	Gracie Humaita South Bay	16-24
20	Waylon Keeran	1,575	Studio 33	2-2
21	Kai Gilsdorf	1,376	Lvl 5 Jiu Jitsu	5-5
22	Zion Ko	1,357	Cobrinha BJJ Mountains Edge	9-12
23	Cyrus Rezaido	1,334	Carlson Gracie Oc	1-3
24	Preston Hargleroad	1,203	Carlson Gracie Inland Valley	11-35
25	Noah Quiazon	1,159	Gracie Humaita South Bay	2-1
26	Austin Fisher	1,139	Carlson Gracie Wine Country	2-7
27	Morgan Brown	1,092	Checkmat Corona	6-16
28	Wyatt Kaimer	1,091	Carlson Gracie Shimeru	1-1
29	Aiden Gongon	1,012	Poway BJJ / Baret Submissions	0-2
30	Brodie New	1,011	Carlson Gracie Menifee	0-2
31	Miguel Turrubiartes	1,008	Strong Base Jiu Jitsu	0-2
32	Alonso Cruz	—	Team Predador	—
33	Emmet Castillo	—	Gracie Humaita Temecula	—
34	Hunter Depass	—	West Coast Jiu Jitsu	—
35	Joseph JR Cancino	—	Arkham Jiu-jitsu	—
36	Nixon Klumpyan	—	Alliance Carlsbad	—

36 Fighters — Multiple brackets · 2–3 wins to gold

Your chance to win gold: 1%

Fighter History

21 matches

Result	Method	Fighter	JITS	Academy	Bracket	Tournament	Format	Date
L	PTS	Leonidas Ng	2377-120	Cobrinha BJJ Las Vegas	Grey No-gi --youth Divisions · 9-10 · Grey Belts · Intermediate · 60.1- 70 Lbs	GRAPPLING-XGrappling X 10/26/2025 2025 Jiu Jitsu National Championship's Las Vegas NV	NoGi	Oct 26, 2025
L	SUB	Ethan Ferreira	2084-470	Cascao Jiu Jitsu	Grey No-gi --youth Divisions · 9-10 · Grey Belts · Intermediate · 60.1- 70 Lbs	GRAPPLING-XGrappling X 10/26/2025 2025 Jiu Jitsu National Championship's Las Vegas NV	NoGi	Oct 26, 2025
L	SUB	Leonidas Ng	2377-180	Cobrinha BJJ Las Vegas	Grey Jiu Jitsu Gi-- Youth Divisions · 9-10 · Grey · 60.1- 70 Lbs	GRAPPLING-XGrappling X 10/26/2025 2025 Jiu Jitsu National Championship's Las Vegas NV	Gi	Oct 26, 2025
L	SUB	Brody Gunner Coray	7168-80	Tac Team BJJ	Grey Jiu Jitsu Gi-- Youth Divisions · 9-10 · Grey · 60.1- 70 Lbs	GRAPPLING-XGrappling X 10/26/2025 2025 Jiu Jitsu National Championship's Las Vegas NV	Gi	Oct 26, 2025
L	SUB 0-0	Judah Adams	1778-370	Los Gallos Grappling Club	White Pre Teen · 60-69	JJWLPhoenix X NoGi Youth	NoGi	Sep 27, 2025
L	SUB 0-2	Iker Erbe	2102-250	Bonita Martial Arts Academy	White Pre Teen · 60-69	JJWLPhoenix X NoGi Youth	NoGi	Sep 27, 2025
L	PTS 0-2	Jacob Salinas	2170-270	North Star BJJ	White Pre Teen · 60-69	JJWLPhoenix X Gi Youth	Gi	Sep 27, 2025
W	SUB 0-0	Casey Rios	1142+320	Gracie Barra Queen Creek	White Pre Teen · 60-69	JJWLPhoenix X Gi Youth	Gi	Sep 27, 2025
L	SUB 0-2	Iker Erbe	2102-320	Bonita Martial Arts Academy	White Pre Teen · 60-69	JJWLPhoenix X Gi Youth	Gi	Sep 27, 2025
W	SUB 0-0	Zephaniah Bair	1010+290	Strong Heart Academy	White Pre Teen · 60-69	JJWLPhoenix X Gi Youth	Gi	Sep 27, 2025

From Cobrinha BJJ Mountains Edge

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Thomas Z Morata Caliboso

Jaythan Jayce Antonio

Scouting Report

Cobrinha BJJ Mountains Edge →

Data Sources

Matches21

Placements7

Tournaments8

Medals🥇 2🥈 1

Sources

GRAPPLING-XJJWL

First MatchMar 2025

Last MatchOct 2025

Stats verified from completed tournaments only, may not represent a fighter's true record.

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About

Zion Ko is a White belt from Cobrinha BJJ Mountains Edge in Arizona competing across 5 tournaments with 0 gold medals, 1 silver, and 1 bronze. His 40% submission rate ranks 4 points above the White belt average of 36%, placing him in the top 61% of his peer group. Despite this finishing efficiency, his 38% win rate trails the White belt average of 50% by 12 points.

Ko has secured 5 competitive wins against higher-rated opponents, including a notable 45-point upset victory over Isaiah Huerta. His development trajectory sits at the 57th percentile DVI in a rebuilding phase, indicating recent volatility in performance. Competing exclusively in JJWL events since his debut in 2025, Ko holds a 1172 JITS rating and ranks #12876 among White belts globally at the 39th percentile.

Frequently Asked Questions

Zion Ko has a 9-12 competition record across 21 matches in 8 tournaments.

Zion Ko is ranked #39861 overall and #13100 among grey belt competitors on Jits.gg.

Zion Ko has earned 2 gold, 1 silver medals across 8 tournaments.

Zion Ko trains at Cobrinha BJJ Mountains Edge and competes as a grey belt.

Zion Ko has a 67% submission rate and a 43% win rate across 21 matches.

Zion Ko is ranked #13100 among grey belt competitors on Jits.gg.

Zion Ko's current Jits rating is 1357. Use the Rating Simulator on Zion Ko's profile to see how a win or loss against any opponent would affect their rating. Factors include opponent strength, match method (submission vs points), and margin of victory.