Knox Gregory Marks profile photo
TournamentAmerican Open X NoGi - Apr 2026
[ yellow / junior-3 ]FL

Knox Gregory Marks

Jits
2,517Elite
~583 Jits to Prodigy
-280Last event: Feb 7, 2026
#9,115
Overall
Top 10%
Percentile
#1,154
yellow Belt
Record
40-3752% Win Rate
40 Wins37 Losses
L
L
W
L
L
1-4 Last 5

Trophy Case

6 GoldJJWL 3 · NAGA 2 · New Breed 1

The Roll Up

Upset ArtistNov 1, 2025

Beat Aiden Sparks by Submission

The Finals Florida Gi YouthThe Roll Up →

Fighter Intelligence

21 Tournaments
Medals
30Medals
across 21 tournaments
Gold 7
Silver 15
Bronze 8
23% Gold Rate
Belt Avg 44%
What this means23% of tournament entries result in gold21 points below the belt average. Still building a medal collection at this level.
Finishing Ability
78%
Subs
Submission 31
Points 9
Other 0
Belt Avg 64%
+14 pts vs belt avg
What this means78% of wins by submission14 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 8% of peers

Win Quality

Consistent
Clutch Score: +3.8%
40
Close Wins
39
Losses
Best win: Beat David Marlet (1734 pts higher)
79 matches analyzed

Format Split

BALANCED
31 Gi45 NoGi
Gi
16W-15L52%
NoGi
24W-21L53%
Sub Rate
Gi 42%NoGi 40%
2% win rate delta — NoGi stronger

Segment Analysis

Maleyellow BeltAges 10-115,468 Fighters
Comparing to 5,468 yellow belt fighters
Win Rate
51%avg 64%
AVG
-12 pts vs avg
Sub Rate
78%avg 64%
AVG
+14 pts vs avg
Gold Rate
24%avg 44%
AVG
-20 pts vs avg
What This Means

Ranked #1154 of 5,468 yellow belts. 51% win rate across 82 matches.

Tale of the Tape

Next Tournaments

Fighter History

76 matches
ResultMethodFighterJITSAcademyBracketVideoTournamentFormatDate
L-
1776-280
Sainz Team Alpha Miami
Yellow
Junior 3 · Light
GiFeb 7, 2026
LSUB
7454-20
Asenjo BJJ
-
10-11 · Advanced · Under 80lbs
NoGiJan 17, 2026
WPTS
4251+160
Gustavo Machado BJJ
-
10-11 · Advanced · Under 80lbs
NoGiJan 17, 2026
LSUB
6937-80
Genesis Academy St Cloud
-
10-11 · Advanced · Under 80lbs
NoGiJan 17, 2026
LSUB
4251-200
Gustavo Machado BJJ
Yellow
10-11 · Under 80lbs
GiJan 17, 2026
LSUB
6937-80
Genesis Academy St Cloud
Yellow
10-11 · Under 80lbs
GiJan 17, 2026
LSUB
7454-110
Asenjo BJJ
Yellow
Pre Teen 10-11 · Feather III
NoGiDec 6, 2025
LSUB
7454-130
Asenjo BJJ
Yellow
Pre Teen 10-11 · Feather III
NoGiDec 6, 2025
LSUB
7454-60
Asenjo BJJ
-
Regular Challenger · Feather III
NoGiDec 6, 2025
WPTS
2535+110
Caridian Brazilian Jiu Jitsu
-
Regular Challenger · Feather III
NoGiDec 6, 2025

From American Killer Bees HQ

See all →
Data Sources
Matches76
Placements30
Tournaments21
Medals🥇 7🥈 15🥉 8
Sources
IBJJFFUJIBJJAGFADCCJJWLNEWBDNAGA
First MatchFeb 2025
Last MatchFeb 2026

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

FloGrappling Videos

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About

Knox Gregory Marks is a Yellow belt from American Killer Bees HQ in Melbourne, FL competing across 18 tournaments with 8 gold, 16 silver, and 7 bronze medals. His 76% submission rate ranks in the top 23% of Yellow belts—24 points above the 52% belt average—making him a finishing-focused competitor. With a 2227 JITS rating, Marks places at #973 in his belt division and #6858 globally, positioning him in the 77th percentile among Yellow belts. Marks has secured 41 competitive wins, including an upset victory over Barret David Hampton (1196-point rating gap).

His best tournament performances include 2 golds at NAGA Tampa Grappling Championship and 2 golds each at American Open IX NoGi Youth and NEWBREED Florida State Championship. Development velocity shows -100.0 pts/month decline (10th percentile DVI), indicating a plateau phase. He competes across 6 organizations—ADCC, AGF, IBJJF, JJWL, NAGA, and NEWBREED—with a slight no-gi preference (1200 rating vs. 1165 gi rating across 43 and 33 matches respectively).

Frequently Asked Questions

Knox Gregory Marks has a 42-40 competition record across 82 matches in 21 tournaments.
Knox Gregory Marks is ranked #9115 overall and #1154 among yellow belt competitors on Jits.gg.
Knox Gregory Marks has earned 7 gold, 15 silver, 8 bronze medals across 21 tournaments.
Knox Gregory Marks trains at American Killer Bees HQ and competes as a yellow belt.
Knox Gregory Marks has a 78% submission rate and a 51% win rate across 82 matches.
Knox Gregory Marks is ranked #1154 among yellow belt competitors on Jits.gg.
Knox Gregory Marks's current Jits rating is 2517. Use the Rating Simulator on Knox Gregory Marks'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.