> ## Documentation Index
> Fetch the complete documentation index at: https://dicksontsai.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Reffing Basketball, Now With AI?

> Published December 22, 2025

*Disclaimer: I work at Anthropic, but this post reflects my personal views and
isn't affiliated with or endorsed by my employer.*

***

I took a hiatus from refereeing high school basketball 🏀 when I started my job
at Anthropic, right after Claude 3 was released. Focusing full-time on AI was
quite a ride, but now I'm ready to get back on the court. This time, I have an
AI to study with.

My time away gave me space to sit with something the
[NFHS basketball](https://nfhs.org/sports/basketball) rulebook says in its
introduction:

> It is important to know the **intent and purpose** of a rule so that it may be
> intelligently applied in each play situation.

But rulebooks have to be succinct. Officials, coaches, and players all need to
carry the same understanding onto the court, and none of them have room for
legislative history. To truly understand the "intent and purpose" of a rule, you
have to reconstruct the years of debate and experience the rules committee
distilled into a single sentence.

## Using AI to Reconstruct Intent

That kind of reconstruction is where I've found AI genuinely useful. I use
[Claude](https://claude.ai), which is capable of
[graduate-level reasoning](https://www.anthropic.com/news/claude-opus-4-5),
searching the web, and citing what it finds. It compresses hours of
cross-referencing into a few minutes of conversation.

For example, Rule 5-11-7 states:

> Successive time-outs, as in Rule 4-43-2, shall not be granted after the
> expiration of playing time for the fourth quarter or any extra period. In all
> other instances, they shall be administered in the order in which they were
> requested.

In previous years, I wouldn't have given the clause much thought. "Ok, I see
this exception but I doubt that it'll ever come up." This time, I asked Claude
to speculate why the exception would be there. Claude came back with an
insightful answer: Without this rule, teams could take advantage of their
remaining timeouts to "ice" a free-throw shooter, a concept that belongs more on
a football field than on a basketball court. Fascinating.

You can see my conversation at:
[https://claude.ai/share/e67c6a89-52b8-4627-9f4b-96de7b99ed54](https://claude.ai/share/e67c6a89-52b8-4627-9f4b-96de7b99ed54)

## Setting Up a Rules Study Project

Setting up a conversation like this is pretty straightforward. I have a Claude
Project that contains the latest publicly-available NFHS basketball material:
the
[2025-26 Basketball Points of Emphasis](https://nfhs.org/resources/sports/basketball-points-of-emphasis-2025-26),
[Rule Changes](https://nfhs.org/resources/sports/basketball-rules-changes-2025-26),
and
[Rules Interpretations](https://nfhs.org/resources/sports/basketball-rules-interpretations-2025-26).

<img src="https://mintcdn.com/personal-709bd105/-HSp5VIoW1UKYF8R/images/claude_project_nfhs_basketball.png?fit=max&auto=format&n=-HSp5VIoW1UKYF8R&q=85&s=27bdb44890b8c2a362b7f3f9ca288a1c" alt="Claude Project for NFHS Basketball" width="3060" height="1654" data-path="images/claude_project_nfhs_basketball.png" />

And with that, you can also simulate how the new rules work in various
situations with Claude. Here's an example where I discuss how to apply the
"faking being fouled" warning during play.

[https://claude.ai/share/61090051-cd78-46bf-8ddf-8dfe1251579a](https://claude.ai/share/61090051-cd78-46bf-8ddf-8dfe1251579a)

## When AI Gets It Wrong

[However](https://old.reddit.com/r/nfl/comments/1psm6pv/highlight_pit_vs_det_call_of_opi_ruling_on_the/),
**Claude can make mistakes!** Without the actual rule text, Claude will
sometimes fill gaps with confident-sounding but incorrect reasoning. NFHS rules
are copyrighted, so I don't paste the full rulebook into my project. Instead, I
include limited excerpts relevant to questions I'm working through, alongside my
own commentary and analysis. As you can see in this example, after I provide
Rule 4-20-1, Claude corrects itself:

[https://claude.ai/share/3511355b-c89d-4d88-ad9e-1d1ccc9246a4](https://claude.ai/share/3511355b-c89d-4d88-ad9e-1d1ccc9246a4)

AI makes the rules more accessible -- and when everyone shows up to the court
with a shared understanding, the quality of the basketball improves. Coaches and
players can explore why a call went a certain way, while officials can work
through edge cases before they happen in a game. The NFHS rules have been
refined over decades by people who understand basketball deeply. I'm curious to
see how local teams and officials adopt it!
