The beginner’s guide to trading sports prediction markets
Everything we’ve learned running a forecasting desk that grades itself in public, turned into a nine-chapter guide for the college football fan who keeps hearing “the market says 68%” and wants to actually speak the language. No secrets, no systems, no promises of profit. This is the probability literacy course, with our own graded numbers as the receipts.
If you can’t answer precisely, this book is for you, and by chapter 3 you’ll answer it better than most people trading this Saturday.
The chapters
- What is a sports prediction market?A price that is secretly a probability, and why that changes everything.
- How sports prediction markets work: orders, spreads, settlementThe order book is just a queue of opinions with money attached.
- What “68% to win” actually meansA 70% favorite loses three times in ten. That is the forecast working.
- Calibration and Brier scores: a good forecast vs a lucky oneAnyone can be right once. Calibration is how you catch who's right on purpose.
- Favorites, longshots, and the bias every beginner pays forThe 10¢ contract feels like a lottery ticket because it is one.
- Can you beat the market? Our own numbers say: almost neverWe built the model, ran five seasons, and it was a coin. Here's the receipt.
- College football prediction markets: what makes CFB differentThe market can't watch 130 teams. You only have to know three.
- Risk management: sizing, limits, and staying in the gameSame forecasts, same results. One sizing rule thrives, the other visits zero.
- Common beginner mistakes, and keeping score honestlyEvery mistake in this chapter is the same mistake wearing different jerseys.
Why trust a free guide?
Because it’s checkable. Maiden publishes a win probability for every college football game it covers (plus tennis, UFC, cricket, and the NFL) and grades every call on a public track record, misses included. Chapter 6 is literally the story of a model we built, measured, and cancelled when it couldn’t beat a coin flip. A guide that teaches calibration had better be written by a desk that submits to it.
And as everywhere on Maiden: these are probabilities and mechanics, graded in public. Nothing here is betting advice.
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