TeamChesslab/att-pdx
TournamentGrappling X 3/22/2025 Oregon State Jiu Jitsu Championships, Portland - Mar 2025
[ grey / youth ]OR
Jack Miersma
Jits
1,304Prospect
~96 Jits to Advanced
-1610Last event: Mar 22, 2025
#42,659
Overall
Top 48%
Percentile
#13,934
grey Belt
Record
4-544% Win Rate
4 Wins5 Losses
W
L
L
L
L
1-4 Last 5
Fighter Intelligence
2 TournamentsMedals
4Medals
across 2 tournaments
Gold 0
Silver 1
Bronze 3
0% Gold Rate
Belt Avg 21%
What this means0% of tournament entries result in gold — 21 points below the belt average. Still building a medal collection at this level.
Finishing Ability
75%
Subs
Submission 3
Points 1
Other 0
Belt Avg 41%
+34 pts vs belt avg
What this means75% of wins by submission — 34 points above the belt average. This fighter has elite finishing ability for their rank.
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Advanced Analytics
AI CalculatedGrowth Trajectory
DVIHolding Steady
Competitive — holding steady
Growing faster than 5% of peers
Win Quality
Consistent
Clutch Score: -2.3%
4
Close Wins
5
Losses
Best win: Beat Jed Zaik (862 pts higher)
9 matches analyzed
Format Split
BALANCED5 Gi4 NoGi
Gi
2W-3L40%
NoGi
2W-2L50%
Sub Rate
Gi 40%NoGi 25%
10% win rate delta — NoGi stronger
Segment Analysis
Malegrey BeltAges 10-1129,089 FightersComparing to 29,089 grey belt fighters
Win Rate
44%avg 45%
AVG
Sub Rate
75%avg 41%
AVG
+34 pts vs avg
Gold Rate
0%avg 21%
AVG
-21 pts vs avg
What This Means
Win rate tracks at 44% for grey belt. 9 matches and counting.
Tale of the Tape
Fighter History
9 matches
| Result | Fighter | JITS | Video |
|---|---|---|---|
| W | 1581+600 | ||
| L | 2424-440 | ||
| L | 2424-1120 | ||
| L | 1283-650 | ||
| L | 3147-290 | ||
| W | 1118+610 | ||
| W | 1118+640 | ||
| W | 2166+460 | ||
| L | 3147-140 |
From Chesslab/att-pdx
See all →Scouting Report
Data Sources
Matches9
Placements4
Tournaments2
Medals🥈 1🥉 3
Sources
GRAPPLING-XNAGA
First MatchFeb 2025
Last MatchMar 2025
Stats verified from completed tournaments only, may not represent a fighter's true record.
FloGrappling Videos
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Similar Fighters
About
Jack Miersma is a grey belt competitor from Chesslab/att-pdx in OR with an impressive 75% submission rate across 9 matches. With a 4-5 record and 1 silver, 3 bronze medals, Jack Miersma has competed in 2 tournaments.
Frequently Asked Questions
Jack Miersma has a 4-5 competition record across 9 matches in 2 tournaments.
Jack Miersma is ranked #42659 overall and #13934 among grey belt competitors on Jits.gg.
Jack Miersma has earned 1 silver, 3 bronze medals across 2 tournaments.
Jack Miersma trains at Chesslab/att-pdx and competes as a grey belt.
Jack Miersma has a 75% submission rate and a 44% win rate across 9 matches.
Jack Miersma is ranked #13934 among grey belt competitors on Jits.gg.
Jack Miersma's current Jits rating is 1304. Use the Rating Simulator on Jack Miersma'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.