Lock In Guaranteed Profit with Arbitrage Betting
Sharp Lines detects price differences between sportsbooks in real time so you can bet both sides of a market and guarantee a profit regardless of the outcome.
Arbitrage betting (also called sure betting or arbing) exploits pricing inefficiencies between sportsbooks. When two books disagree on the odds for an event, you can bet both outcomes and lock in a guaranteed profit no matter what happens. Sharp Lines continuously scans odds from 20+ US sportsbooks and instantly surfaces arbitrage opportunities the moment they appear. Each opportunity shows you exactly which books to bet, what odds to take, how to split your stake, and the guaranteed profit percentage — so you can act before the lines move. For bets with a mathematical edge but not a guaranteed profit, check out our +EV scanner. And if you spot overlapping lines, the middles finder can help you win both sides.
Arbitrage Scanner Features
Real-Time Arb Detection
Continuously scans odds across 22+ sportsbooks to find pricing discrepancies. Arbitrage opportunities appear within seconds of a line change and disappear fast — speed matters.
Automatic Stake Calculator
Enter your total stake and Sharp Lines calculates the exact amount to bet on each side to guarantee maximum profit. Supports custom stake amounts from $10 to $10,000+.
Guaranteed Profit Display
Every opportunity shows the exact profit percentage and dollar amount before you place a bet. No guessing — you know your return before you click.
Multi-Sportsbook Coverage
Covers DraftKings, FanDuel, BetMGM, Caesars, PointsBet, BetRivers, Hard Rock, Fanatics, ESPN BET, and more. The more books you have accounts with, the more arbs you find.
Sport & League Filtering
Filter by sport, league, date range, and sportsbook to focus on the opportunities that match your accounts and preferences.
Live & Pre-Match Markets
Find arbitrage opportunities in both pre-match and live in-game markets. Live arbs tend to have higher profit margins but shorter windows.
How Arbitrage Detection Works
We Compare Every Line
Sharp Lines pulls real-time odds from every major US sportsbook and compares them across all markets — moneylines, spreads, totals, and props.
We Find the Mismatch
When two sportsbooks disagree enough that betting both sides guarantees a profit, we flag it instantly and calculate the optimal stake split.
You Lock In Profit
Place both bets at the displayed odds. No matter who wins, you profit. Repeat across dozens of daily opportunities to build consistent returns.
Arbitrage Betting FAQ
What is arbitrage betting?
Arbitrage betting means placing bets on all possible outcomes of an event across different sportsbooks where the combined odds guarantee a profit. For example, if DraftKings offers +150 on Team A and FanDuel offers -130 on Team B, you might be able to bet both sides and profit regardless of the result. It works because sportsbooks set odds independently and sometimes disagree on the true probability.
Is arbitrage betting legal?
Yes, arbitrage betting is completely legal in all US states where sports betting is legal. You are simply placing bets at the odds each sportsbook offers. However, some sportsbooks may limit accounts that they identify as consistently arbing. Sharp Lines is an analytics tool — we help you find opportunities but do not place bets on your behalf.
How much profit can I expect from arbs?
Typical arbitrage opportunities yield 1-5% guaranteed profit per event. While that sounds small, the key is that the profit is guaranteed — there is zero variance. With a $1,000 bankroll cycling through multiple arbs daily, profits compound quickly. The number of available arbs depends on the day, sport season, and how many sportsbook accounts you have.
How many sportsbook accounts do I need?
The more sportsbook accounts you have, the more arbitrage opportunities you will find. We recommend having accounts at a minimum of 5-6 major books (DraftKings, FanDuel, BetMGM, Caesars, BetRivers, ESPN BET). Each additional book significantly increases the number of available arbs.
How fast do arbitrage opportunities disappear?
Arbitrage windows can last anywhere from a few seconds to several minutes. Pre-match arbs tend to last longer (minutes), while live arbs may close within seconds. Sharp Lines provides real-time alerts with sub-second data latency on paid plans to help you act before opportunities close.
Can I try the arb scanner for free?
Yes. The free tier includes access to the arbitrage scanner with a 60-second data delay, a 2% EV cap, and two sportsbooks (DraftKings and FanDuel). The Plus plan ($59/mo) adds +EV, middles, low hold, real-time data, and all 22+ sportsbooks with a 7-day free trial.
Ready to find your edge?
Join thousands of bettors using Sharp Lines to find profitable opportunities.
Get Started Free