Slip Analyzer
Find the weak link in your parlay
Drop a screenshot or paste the legs. You get an A to F grade, your true hit chance versus what the book charges, the one leg killing the slip and a safer line or a +EV swap for it.
FanDuel, DraftKings, PrizePicks, Sleeper. PNG / JPEG up to 6 MB.
Your legs
Paste text or a screenshot above, or add the legs one by one.
How the audit works
How does the slip analyzer grade a leg?
Each player leg is priced from the player's own game log (last 5 / last 10 / season), a negative-binomial or normal projection, and any active teammate-injury usage boost. Game lines use the de-vigged market consensus. Every leg ends as KEEP, LOWER LINE (with the exact safer threshold) or SLIP KILLER.
What is the hidden vig on a parlay?
It is how much shorter the sportsbook payout is than the fair payout for the slip's true hit chance. Same-game parlays with negatively correlated legs, such as a game Under with a player points Over, usually carry the most.
Do I need an account?
No. You get 2 free slip audits per day in this browser; one email unlocks unlimited audits.