Bally Bet vs Fliff: where their odds disagree
Over the last 30 days, Bally Bet and Fliff quoted the same line at prices that summed to less than 100% on 11 game-markets — a cross-book arbitrage — with an average net edge of 4.61% and a peak of 12.95%. On plain vig, Bally Bet is the cheaper book of the two. Last disagreement: Sep 19, 2026.
Vig: Bally Bet vs Fliff
| Bally Bet | Fliff | |
|---|---|---|
| Overall overround | 5.29% | 6.23% |
| Moneyline | 4.81% | 5.61% |
| Spreads | 5.14% | 6.49% |
| Totals | 5.70% | 6.50% |
| NFL | 4.89% | 6.07% |
| MLB | 5.51% | 6.13% |
| NBA | 4.84% | — |
| NHL | 5.13% | — |
| MLS | 6.48% | 9.87% |
Disagreements by sport
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 |
|---|---|---|---|---|
| Detroit Tigers @ Chicago White Sox · MLB | moneyline | Chicago White Sox @ Bally Bet + Detroit Tigers @ Fliff | 6.25% | Sep 18, 8:50 PM ET |
| Milwaukee Brewers @ Pittsburgh Pirates · MLB | spread 3.5 | Milwaukee Brewers @ Bally Bet + Pittsburgh Pirates @ Fliff | 1.11% | Sep 17, 1:41 PM ET |
| Texas Rangers @ Arizona Diamondbacks · MLB | total 8.5 | Over @ Fliff + Under @ Bally Bet | 0.54% | Sep 12, 11:16 PM ET |
| Chicago White Sox @ St. Louis Cardinals · MLB | moneyline | Chicago White Sox @ Bally Bet + St. Louis Cardinals @ Fliff | 4.13% | Sep 12, 8:59 PM ET |
| Chicago Bears @ Carolina Panthers · NFL | moneyline | Carolina Panthers @ Fliff + Chicago Bears @ Bally Bet | 0.94% | Sep 9, 3:14 AM ET |
| Colorado Rapids @ Columbus Crew SC · MLS | total 2.5 | Over @ Bally Bet + Under @ Fliff | 3.59% | Sep 5, 9:34 PM ET |
| Arizona Diamondbacks @ Houston Astros · MLB | total 4.5 | Over @ Fliff + Under @ Bally Bet | 10.17% | Sep 4, 10:47 PM ET |
| Arizona Diamondbacks @ Houston Astros · MLB | spread 1.5 | Arizona Diamondbacks @ Fliff + Houston Astros @ Bally Bet | 12.95% | Sep 4, 10:47 PM ET |
| San Francisco Giants @ Pittsburgh Pirates · MLB | moneyline | Pittsburgh Pirates @ Bally Bet + San Francisco Giants @ Fliff | 0.75% | Sep 3, 2:20 PM ET |
| New York Yankees @ Los Angeles Angels · MLB | total 8.5 | Over @ Bally Bet + Under @ Fliff | 1.48% | Aug 31, 11:57 PM ET |
| Tampa Bay Rays @ Baltimore Orioles · MLB | moneyline | Baltimore Orioles @ Fliff + Tampa Bay Rays @ Bally Bet | 8.79% | Aug 23, 4:26 PM ET |
Frequently asked questions
How often do Bally Bet and Fliff disagree?
In the last 30 days our scanner recorded 11 game-markets where Bally Bet and Fliff quoted the same line at prices whose implied probabilities summed to less than 100% — a cross-book arbitrage — across 11 scans. The average net edge was 4.61% and the largest 12.95%.
Which has lower vig, Bally Bet or Fliff?
Bally Bet — Bally Bet measures 5.29% overall and Fliff measures 6.23% 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 Fliff disagree on most?
MLB (9 game-markets, avg 5.13%); NFL (1 game-markets, avg 0.94%); MLS (1 game-markets, avg 3.59%).
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