Arb WatcherBeta

Free betting tools

Everything on Arb Watcher in one place: find bets, research players, run the numbers and learn how it all works. Free, no account.

Find bets

Live arbsTwo books disagree enough that betting both sides pays either way. Updated about every minute.No-lose middlesOver at one line, under at another. Land in between and both bets win.+EV betsPrices that beat the fair price from the other books. Strict on purpose.Model picksOur simulation's daily NBA and NFL picks, posted once and graded every morning.Best linesEvery game's best spread, moneyline and total across sportsbooks.Prop oddsSearch any player prop and see the best over and under.

Research

NBA + NFLPlayer searchRecent games against the line, the model's projection and chance, and every book's price.TrendsTonight's lines a player has cleared in at least 8 of his last 10 games.NBAMatchupsWhat tonight's opponent allows to each player's position, with ranks.NBADefense vs positionEvery defense ranked by stat and position, this season and last.NBAMinutes boostsPlayers the sim gives extra minutes tonight, usually because a teammate is out.NFLNFL player searchThis week's NFL props: season games against the line and the NFL model's chance.

Calculators

Arbitrage calculatorEnter two prices and a total: see if it's an arb, how to split it and what you get back.Bet slipTap + on any prop to build a parlay, then price it at one sportsbook.

Learn

GuideArbitrage bettingWhy arbs exist, a real example, and how to bet one.GuideMiddlesHow a middle works and what makes one no-lose.Guide+EV bettingFair prices, expected value and how our +EV list works.All guidesEvery guide, plus a quick start for using the site.

Questions

Are these tools free?

Yes. Everything on the site is free and there's no account. Bet buttons are sportsbook links that may pay the site a referral.

Where do the prices come from?

The major US sportsbooks and exchanges, through Unabated's odds feed, refreshed about every minute during the day.