Bally Bet vs FanDuel: where their odds disagree
Over the last 30 days, Bally Bet and FanDuel quoted the same line at prices that summed to less than 100% on 20 game-markets — a cross-book arbitrage — with an average net edge of 3.63% and a peak of 12.25%. On plain vig, FanDuel is the cheaper book of the two. Last disagreement: Sep 18, 2026.
Vig: Bally Bet vs FanDuel
| Bally Bet | FanDuel | |
|---|---|---|
| Overall overround | 5.29% | 4.58% |
| Moneyline | 4.81% | 4.00% |
| Spreads | 5.14% | 4.84% |
| Totals | 5.70% | 4.90% |
| NFL | 4.89% | 4.57% |
| MLB | 5.51% | 4.56% |
| NBA | 4.84% | 4.50% |
| NHL | 5.13% | 4.85% |
| MLS | 6.48% | — |
Disagreements by sport
| Sport | Game-markets | Avg net edge | Max net edge |
|---|---|---|---|
| MLB | 20 | 3.63% | 12.25% |
How big the edges were
Share of detections by net edge bucket. Most cross-book edges are small; the tail is where the money and the execution risk both live.
Recent examples
Best detection per game-market, most recent first. These windows have closed.
| Game | Market | Legs | Net edge | Detected |
|---|---|---|---|---|
| Boston Red Sox @ Tampa Bay Rays · MLB | spread 1.5 | Boston Red Sox @ Bally Bet + Tampa Bay Rays @ FanDuel | 4.29% | Sep 18, 7:33 PM ET |
| Milwaukee Brewers @ Pittsburgh Pirates · MLB | spread 2.5 | Milwaukee Brewers @ FanDuel + Pittsburgh Pirates @ Bally Bet | 4.96% | Sep 17, 3:43 PM ET |
| Athletics @ Tampa Bay Rays · MLB | total 7.5 | Over @ FanDuel + Under @ Bally Bet | 8.80% | Sep 16, 8:59 PM ET |
| Miami Marlins @ Arizona Diamondbacks · MLB | total 12.5 | Over @ FanDuel + Under @ Bally Bet | 12.25% | Sep 15, 12:04 AM ET |
| Pittsburgh Pirates @ Chicago Cubs · MLB | total 8.5 | Over @ Bally Bet + Under @ FanDuel | 0.82% | Sep 13, 4:02 PM ET |
| Cincinnati Reds @ Los Angeles Dodgers · MLB | total 5.5 | Over @ FanDuel + Under @ Bally Bet | 2.01% | Sep 9, 12:26 AM ET |
| Cleveland Guardians @ Baltimore Orioles · MLB | total 14.5 | Over @ FanDuel + Under @ Bally Bet | 2.44% | Sep 8, 9:23 PM ET |
| Chicago Cubs @ Miami Marlins · MLB | spread 1.5 | Chicago Cubs @ FanDuel + Miami Marlins @ Bally Bet | 0.49% | Sep 6, 7:15 AM ET |
| Detroit Tigers @ Cleveland Guardians · MLB | spread 4.5 | Cleveland Guardians @ FanDuel + Detroit Tigers @ Bally Bet | 1.00% | Sep 4, 4:07 PM ET |
| Milwaukee Brewers @ Chicago Cubs · MLB | moneyline | Chicago Cubs @ FanDuel + Milwaukee Brewers @ Bally Bet | 2.36% | Sep 3, 9:13 PM ET |
| New York Yankees @ Los Angeles Angels · MLB | moneyline | Los Angeles Angels @ Bally Bet + New York Yankees @ FanDuel | 0.37% | Sep 2, 10:08 PM ET |
| San Diego Padres @ Cincinnati Reds · MLB | moneyline | Cincinnati Reds @ Bally Bet + San Diego Padres @ FanDuel | 2.74% | Sep 1, 6:50 AM ET |
| Colorado Rockies @ Washington Nationals · MLB | spread 10.5 | Colorado Rockies @ Bally Bet + Washington Nationals @ FanDuel | 7.96% | Aug 26, 9:24 PM ET |
| Los Angeles Dodgers @ Atlanta Braves · MLB | moneyline | Atlanta Braves @ FanDuel + Los Angeles Dodgers @ Bally Bet | 0.41% | Aug 26, 7:53 PM ET |
| Cleveland Guardians @ Los Angeles Angels · MLB | moneyline | Cleveland Guardians @ Bally Bet + Los Angeles Angels @ FanDuel | 1.27% | Aug 26, 5:35 PM ET |
Frequently asked questions
How often do Bally Bet and FanDuel disagree?
In the last 30 days our scanner recorded 20 game-markets where Bally Bet and FanDuel quoted the same line at prices whose implied probabilities summed to less than 100% — a cross-book arbitrage — across 20 scans. The average net edge was 3.63% and the largest 12.25%.
Which has lower vig, Bally Bet or FanDuel?
FanDuel — Bally Bet measures 5.29% overall and FanDuel measures 4.58% over 30 days of live lines. The per-market and per-sport breakdown is in the table above.
Does this mean I can make money betting both?
Not automatically. These are measurements of past disagreements at the moment they were detected. Lines move within minutes, displayed prices may not be available at your stake, both books must be accessible in your state, and neither book has to honor a stale price. ArbMonster shows the math; the execution and the risk are yours.
Which sports do Bally Bet and FanDuel disagree on most?
MLB (20 game-markets, avg 3.63%).
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