What does a -2.2% edge mean?

A negative edge of -2.2% means the price (-4000) is worse than fair value (-2081). You can still win, but the long-run math is against you.

Does a positive edge mean the bet is likely to win?

No. The market still implies about a 97.6% chance this hits at the offered odds. A +EV bet pays more than its true probability warrants — most +EV bets at long odds still lose individually.

How are fair odds calculated?

Sportsbook prices on the same market are de-vigged and averaged to estimate a true win probability. Using the available market price, we estimate 95.4%, which converts to fair odds of -2081.

Why does this grade differ from the sportsbook's advertised lift?

Books quote lifts vs their own original line, which already includes margin. We compare the price to a vig-free consensus, so an advertised lift can still grade poorly if the underlying line was inflated.

Should I bet every bet that grades well?

Grading is a price-quality signal, not a guarantee. Even a B-grade bet can lose. Size within your bankroll, account for correlation, and don't chase results.

Sevilla vs Rayo Vallecano: Over 4.0 Corners — B Grade — Modest Edge Play (52/100)

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AiOddsLab

Bet365

Better Off PassingBalancedB

Price or risk doesn't justify it

Sevilla vs Rayo Vallecano: Over 4.0 Corners

Nothing to anchor a fair price against. Not a knock on your read — just an honest "we don't know."

Stake idea · Balanced

0.5u · Half

Reasonable spot — half a unit keeps it fun.

Your odds

-4000

Fair odds

-2081

Edge

—

Settle the debate

One brand · 3 sizes

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Inside angles

Researching…

Pulling weather, lineups, head-to-head, and schedule spots…

Angles are surfaced only when backed by a specific fact. Verify lineups and weather close to game time.

AI breakdown

Verdict: This single-leg bet on Over 4.0 Corners has an incredibly low offer price, making it a unique play in a standard market!

Value: the matchup no comparable market consensus available, so we can't pinpoint a specific numerical edge here. The offer price is extremely low, suggesting a very high probability of this leg hitting.
Market context: The offered price of -4000 is exceptionally low, indicating this is expected to be a common outcome for corners in this match. the matchup no best alternative book to compare.
Status: No notable injury signals for either team.
Social: the matchup public social data available for this specific bet.
Risk: As a single leg, the primary risk is simply the high juice on this line. While "Over 4.0 Corners" implies just five or more corners are needed, the -4000 price means you're risking a lot to win a little.

Smart insight: the matchup the extremely low offered price, this bet's EV is most sensitive to any unexpected game script that would significantly depress corner kicks, which would be rare for such a low total. Similar profile: This is a single-leg total over bet with an extremely juiced line, which typically resolves as expected due to the implied high probability, but offers minimal payout. Counter-case: The biggest thing working against this bet is the heavy juice, meaning your potential return is very small compared to the amount wagered. Live context: the matchup lineups near tip-off for any major surprises that might drastically alter expected game flow or team attacking styles.

Stake suggestion: the matchup stake.

How this bet was graded

Grade B · 52/100 · Better Off Passing

Sevilla vs Rayo Vallecano: Over 4.0 Corners at -4000 on Bet365: we couldn't match this slip to enough comparable market prices to compute a trustworthy consensus fair value, so no edge % is shown — anything we'd print would just echo the book's own vig. The grade leans on price lift vs the original (+0.0%), leg count, and variance. Treat it as directional.

Frequently asked questions

Why isn't an edge % shown?

We couldn't match this slip to enough comparable market prices to compute a trustworthy fair value. Rather than show a number derived from the offered price itself (which would just echo the book's vig), we leave the edge unstated. The grade still reflects price lift vs the original, variance, and confidence.

Does the grade still mean something?

Yes. B (52/100) is built from the price lift, leg count, variance, and any verified context signals — it's directional. Treat it as a sanity check, not a precise EV figure.

Should I bet every A-grade ticket?

Grading is a price-quality signal, not a prediction. Even an B-grade ticket can lose. Size within your bankroll, account for correlation between legs, and use Inside Angles above to spot factors the price hasn't absorbed yet.