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Derek Shaw

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Derek Shaw, writer on betting models and market pricing
Writer on betting models and market pricing

Derek writes about how betting markets are priced, what prediction models can and cannot do, and what account terms actually say — arithmetic that readers can redo themselves.

2 Languages
2 Guides published
2 External sources cited
Bookmaker margin Implied probability Closing line value Prediction models Overfitting and backtests Account terms Verification and KYC Betting market pricing

About Derek Shaw

Derek Shaw writes the guides on this site about market pricing, prediction models and the terms that govern betting accounts.

His guides are built on arithmetic rather than on results: how the margin is calculated from published prices, why a break-even rate is one divided by the odds, and why closing line value is the only test that works on a sample a reader could actually place.

He writes for this site independently. He is not employed by any operator, does not sell selections, and does not publish a betting record — because a record he could not let readers verify would be worth nothing.

He declines to write the article this subject usually produces: instructions for evading an operator's detection systems. Those instructions work by breaching terms the reader has accepted, and the cost of being wrong is the balance.

Where a claim cannot be checked from published information, his guides say it cannot be checked rather than filling the gap with an estimate.

The recurring point in his writing is that a prediction is only as good as the price it was taken at, and that most published accuracy claims omit exactly that number.

Background & Credentials

  • Writes the market-pricing and account-terms guides on this site
  • Every calculation published is reproducible from public odds by the reader
  • Declines to publish detection-evasion tactics, and explains in the guide why

How Derek Checks a Claim

Every calculation in a guide is reproducible from published odds — the reader can redo it with a calculator.

No claim is made about detection systems, internal operator data or account monitoring beyond what the published terms state.

Model claims are assessed against closing prices, not against a run of results, because results over a small sample do not separate skill from variance.

Where a figure would have to be estimated, the guide states that no verifiable figure exists.

"An accuracy figure without the price it was achieved at cannot be checked, which is usually why it is published that way." — Derek Shaw

Frequently Asked Questions

Does Derek Shaw sell betting selections?

No. He does not sell picks, run a tipping service, or publish a betting record, and the guides say why a record nobody can verify is not evidence.

Does he work for a bookmaker or casino?

No. He writes for this site and has no employment relationship with any operator.

Do his guides explain how to avoid account limits?

No, deliberately. Techniques for evading detection work by breaching accepted terms, and the guide explains what the terms say instead.

Where do the numbers in his guides come from?

From arithmetic on published odds and published terms. Every calculation can be redone by the reader.

Does he claim AI can beat the bookmaker?

No. His guides set out precisely where models outperform intuition and where they fail, and the margin remains the hurdle in both cases.

Articles by Derek Shaw

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