How My Sure Odds Verifies Every Arbitrage Opportunity

Continuous odds reading, correct fixture matching, rounding handled in the safe direction, and filtering out stale prices -- what actually sits behind a flagged opportunity.

Last updated 2026-09-18

A scanner is only as trustworthy as the accuracy of what it flags — a tool that surfaces opportunities based on stale, mismatched, or incorrectly compared data does more harm than good, since acting on a false signal can turn what looks like a guaranteed profit into a real loss. Here's how My Sure Odds approaches verification.

Continuous, direct odds reading

Rather than relying on delayed or periodically-refreshed data, My Sure Odds reads bookmaker odds continuously, matching each fixture across bookmakers so the same match is being compared like for like — not just by team names, but by the specific market and outcome being priced, since a mismatch here (comparing a main line at one bookmaker against a different line at another, for instance) would produce a false arbitrage signal.

Implied probability calculation, checked continuously

For every matched fixture and market, the platform continuously converts each bookmaker's odds into implied probability and sums them across the best available price for each outcome. Only when that sum genuinely falls under 100% — accounting for the platform's own minimum profit threshold, which users can adjust — does an opportunity get surfaced on the board.

Correct, rounded stake calculation

As covered in the rounding-errors post, an opportunity that looks mathematically sound before rounding can lose its edge entirely if stakes aren't rounded correctly. My Sure Odds calculates stake splits with rounding handled in the direction that protects the worst-case outcome, rather than naive rounding that could quietly erase a thin margin.

Filtering out stale or unreliable prices

Odds that haven't updated recently, or that come from a bookmaker or market showing signs of unreliable or delayed data, are treated with appropriate caution rather than being surfaced with the same confidence as freshly-verified prices. This matters specifically because acting on stale data is one of the most common ways a real-looking arbitrage opportunity turns out not to be genuinely available by the time you try to place it.

Transparency in what's shown

Rather than just displaying a headline profit percentage, each opportunity on the board shows the specific bookmakers, the specific odds being compared, and the calculated stake for each leg — giving users the ability to verify the underlying numbers themselves before committing capital, rather than being asked to trust an opaque calculation.

Why this verification layer matters more as margins get thinner

The thinner an arbitrage margin, the less room there is for any data or calculation error to be absorbed without turning a guaranteed profit into a loss, as covered in the rounding-errors post. Building verification and accuracy checks directly into how opportunities are surfaced — rather than leaving users to manually double-check every flagged opportunity themselves — is what makes a scanner genuinely useful rather than just a faster way to generate potentially unreliable signals.