Sportsbooks set prices. Compare them here.
Marginox compares available prices across supported sportsbooks and models the outcomes when the same market is priced differently using illustrative stakes. Results depend on acceptance and matching rules.
What it actually does
Books set their own odds. They move at different speeds, they carry different exposure, and they are pricing for their own customers, not for each other. So displayed prices can differ across the same game, creating a calculated gap that may disappear before a sportsbook accepts a wager.
Marginox matches markets, checks quote age and calculates illustrative stakes. Links open sportsbook pages only. Marginox does not submit or confirm wagers.
What it looks for
- Arbitrage. A positive calculated result if every wager is accepted at the entered price and settles under matching rules. Prices and limits can change.
- +EV. A displayed price above the model's estimated fair value. Positive EV is a long-run estimate. Any wager can lose.
- Promo conversion. Estimating outcomes for a promotion under its stated terms by modeling a second position. Check eligibility, rollover and expiry.
What it is not
Marginox is not a sportsbook. It never holds your money, never takes a wager, or submits, confirms or settles bets. It is an independent calculator with a view of supported sources.
It is also not a tipster. Nothing here is a prediction about who will win. Calculations depend on displayed prices and model assumptions, shown alongside the results. The sportsbook's official record controls.
How to check the results
Each displayed play shows the relevant books, prices, and calculated return; +EV analysis also shows its eligible fair-price reference. Stale prematch quotes are withheld, and live cards show age while lag-like crosses are filtered before they reach the board.
Every plan receives the same latest completed feed. Paying more does not buy a faster serving cadence. It raises the size of edge you are allowed to see.
Who it is for
Adults who want to compare displayed odds and review the math. You decide whether to wager and must verify sportsbook prices, rules and acceptance. Predictions about who will win are not the purpose of this tool.