JATSport
15 Sportsbooks · 7 Sports · Sharp-Book Devig

Find the Real Edge.
Before Lines Move.

We strip the vig from 15 sportsbooks using sharp-book consensus — Pinnacle, Bookmaker, and more — to expose the fair probability behind every line and show exactly where the math is in your favor.

The Odds API · 15 books Odds refresh every 5–15 min Multiplicative devig Free to use

Free to use · No credit card required

LIVE BEST EDGES · MLB
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Bet Best Odds True Prob Edge ⓘ
Devigged from Pinnacle & Bookmaker sharp consensus How edge is calculated →
Live opportunities

Live EV Opportunities

Live · MLB
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Paste any two odds — see the real math

Enter a moneyline from any sportsbook. We'll remove the vig and show you the fair probability — the number the book doesn't advertise.

Enter both odds above to see the fair probability.

This is exactly what JATSport does across 15 sportsbooks — 24/7, for every game. See all live odds →

The problem

Sportsbooks hide your real edge. We show it.

Every line has the bookmaker's margin baked in. Without removing it, you can't tell a good bet from a bad one — the numbers look plausible either way.

What the book shows
Yankees −130
Implied probability: 56.5%
Red Sox +110
Implied probability: 47.6%
Total: 104.1% — 4.1% vig hidden
After devigging (Pinnacle)
Yankees 51.0%
True probability (no margin)
Red Sox 49.0%
True probability (no margin)
Red Sox +110 edge: +1.4% — worth betting

The book prices Red Sox at 47.6% implied. Sharp consensus puts their true chance at 49.0%. That gap is your edge.

The tools

Three tools that move the needle

EV+ Finder

Every bet where the math is in your favor, ranked by edge. Devigged from Pinnacle and Bookmaker sharp consensus. Includes arb, steam, and middles.

Try the Value Finder →

Live Odds Comparison

Every line, every book, fair probability side-by-side. Sorts by edge automatically. Add your bankroll and get Kelly bet sizing in dollars.

Open Odds Page →

Performance Tracker

Log picks and measure what actually matters: ROI, win rate, and closing line value over time. The only way to know if your edge is real.

Track your picks →
Process

How JATSport works

1

Odds are fetched live

We pull lines from major sportsbooks in real time via The Odds API, covering moneylines, spreads, and totals.

2

Vig is removed

The bookmaker margin is stripped using the multiplicative devig method to expose the true market probability for each outcome.

3

Edge is calculated

Your assessed probability is compared to the market's implied probability. A positive gap means a potential edge worth betting.

4

Stake is sized

The Kelly Criterion converts your edge into an optimal bet size relative to your bankroll. No guesswork, no gut feelings.

Stay informed

Get notified about top edges

Save your email to receive daily EV digests — top edges, best odds, and Kelly stakes — when delivery launches.

You'll receive a confirmation email first. No bet is guaranteed to win.

FAQ

Frequently asked questions

JATSport does not accept wagers or place bets on your behalf — it's a research and analysis tool. Sports-betting laws vary by jurisdiction; users are responsible for complying with the laws where they live.
Odds are fetched from The Odds API and cached for up to 2 hours. Line movement happens continuously, so always verify odds at your sportsbook before placing a bet.
We remove the sportsbook's vig using multiplicative devig, deriving a fair probability from sharp book consensus (Pinnacle, Bookmaker, etc.). Edge = fair probability minus the implied probability of the best available line. Odds refresh every 5–15 min depending on how close the game is.
Sharp betting can lead to account restrictions at square books. Sportsbooks may restrict or limit accounts based on their own policies. JATSport does not recommend attempting to circumvent sportsbook restrictions. Prioritize sharp-friendly books like Pinnacle and Bookmaker that welcome winning players.
Action Network focuses on picks and social content; OddsJam is a professional-grade tool at a premium price. JATSport offers quantitative EV analysis with sharp/square methodology — free, without a subscription.
MLB, NFL, NBA, NHL, ATP Tennis, and PGA Golf. New sports are added as markets open.
JATSport shows you the math — it doesn't sell picks or claim to have insider information. Every edge calculation is derived from publicly available odds using a documented methodology (multiplicative devig from sharp-book consensus). You can verify every number yourself. We make no guarantees, and we're not trying to sell you anything.
JATSport's performance tracker is in early stages — sample sizes are small. We show what's there honestly rather than hiding it. No bet tracking system is proof of future performance. The value of the tool is in the methodology and live edge calculation, not in following any specific picks. Track your own bets and draw your own conclusions over time.
3
Devig Models
Shin · Additive · Power
15
Sportsbooks
Live odds · Updated every 5–15 min
1,258
Unit Tests
All passing · Verified math
Open
Methodology
Every formula documented →
Pinnacle-based sharp consensus Responsible gambling tools built in No picks sold. No hype. Just math.

Why trust JATSport?

Built for bettors who want the math

15
Sportsbooks tracked
3
Devig models (Shin, Additive, Power)
7
Sports covered
1,544
Automated math tests
$0
No picks sold. Ever.

Transparent formulas · No guaranteed winners · No paid picks · No touts

Start finding your edge today

Free forever. No credit card. Just the math the books don't want you to see.

Find Today's Edges →
15 sportsbooks · Updated every 5–15 min · No signup required to browse
Get in touch

Contact us

Have a question, suggestion, or issue with the tool? We'd love to hear from you. Reach out and we'll get back to you as soon as possible.

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Important Disclaimer

JATSport provides analytical tools and information for educational and entertainment purposes only. No bet is guaranteed to win. Sports betting involves real financial risk, and past performance of any model or system does not guarantee future results. JATSport is not a licensed financial advisor or gambling operator. We are not liable for any losses incurred as a result of bets placed using information or analysis from this site. Always gamble responsibly and within your means. If you or someone you know has a gambling problem, contact the National Problem Gambling Helpline at 1-800-522-4700.

Start finding edges today — it's free. Find Today's Edges →