The Grappler's Watch
Beatrice J.Data-driven insights on the sport of Brazilian Jiu-Jitsu
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 18 | Founded | 4 years ago | Last Issue | 12 days ago |
| Active | |||||
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thegrapplerswatch.substack.comLatest Issues
Belts Totally Matter: A Data Driven Breakdown
We and the whole internet have been there a million times.
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“How come my buddy who started at the same time as me got promoted before me?”
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“I’m a blue belt and I just tapped out my first black belt.” - Reddit thread (one of many)...
The Truth About Default Gold Warriors
In 2025 so far across 48 open tournaments, the IBJJF has given out approximately 25,000 (9,300 gold, 7,357 silver and 8,324 bronze) medals to juvenile, adult, and masters competitors, which surely you have noticed all over Facebook and Inst...
AOJ and Melqui Galvao teams sweep Euros, top teams bring minimal white belts
I analyzed over 6,000 matches from the 2025 IBJJF European Championship last week. Since its the first gi major of the “grand slam” circuit, we can see which teams to keep an eye on throughout the season.
AOJ and Melqui Galvao wipe th...
Your weight class kind of doesn't matter until black belt, if you're above feather weight
In last week’s story, I made kind of a bold postulate: Among colored belts, one weight class didn’t seem to make a difference in 3,000 IBJJF open class matches. And to be fair, when we looked at the data in aggregate, this appeared true. Th...
Your weight class kind of doesn't matter until black belt.
Thanks to IBJJFRankings.com, I got to analyze more than 3,000 IBJJF open class matches to see if weight matters. Spoiler alert, weight matters (statistically), but not as much as you might think after a closer look. A quick summary in case...
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