Bally Bet vs DraftKings: where their odds disagree
Over the last 30 days, Bally Bet and DraftKings quoted the same line at prices that summed to less than 100% on 12 game-markets — a cross-book arbitrage — with an average net edge of 4.89% and a peak of 11.72%. On plain vig, DraftKings is the cheaper book of the two. Last disagreement: Sep 19, 2026.
Vig: Bally Bet vs DraftKings
| Bally Bet | DraftKings | |
|---|---|---|
| Overall overround | 5.29% | 4.54% |
| Moneyline | 4.81% | 4.28% |
| Spreads | 5.14% | 4.66% |
| Totals | 5.70% | 4.69% |
| NFL | 4.89% | 4.57% |
| MLB | 5.51% | 4.65% |
| NBA | 4.84% | 4.58% |
| NHL | 5.13% | 4.33% |
| MLS | 6.48% | — |
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 |
|---|---|---|---|---|
| Milwaukee Brewers @ Baltimore Orioles · MLB | total 8.5 | Over @ Bally Bet + Under @ DraftKings | 5.61% | Sep 18, 10:22 PM ET |
| Miami Marlins @ Arizona Diamondbacks · MLB | spread 1.5 | Arizona Diamondbacks @ Bally Bet + Miami Marlins @ DraftKings | 6.82% | Sep 16, 1:23 AM ET |
| Miami Marlins @ Arizona Diamondbacks · MLB | total 6.5 | Over @ Bally Bet + Under @ DraftKings | 7.75% | Sep 16, 1:23 AM ET |
| New York Yankees @ Minnesota Twins · MLB | spread 1.5 | Minnesota Twins @ DraftKings + New York Yankees @ Bally Bet | 7.54% | Sep 14, 9:01 PM ET |
| Washington Commanders @ Philadelphia Eagles · NFL | moneyline | Philadelphia Eagles @ Bally Bet + Washington Commanders @ DraftKings | 2.88% | Sep 13, 6:35 PM ET |
| Baltimore Ravens @ Indianapolis Colts · NFL | spread 18.5 | Baltimore Ravens @ DraftKings + Indianapolis Colts @ Bally Bet | 11.72% | Sep 13, 4:18 PM ET |
| Baltimore Orioles @ Toronto Blue Jays · MLB | total 11.5 | Over @ Bally Bet + Under @ DraftKings | 1.22% | Sep 11, 10:03 PM ET |
| Baltimore Orioles @ Toronto Blue Jays · MLB | spread 2.5 | Baltimore Orioles @ DraftKings + Toronto Blue Jays @ Bally Bet | 1.45% | Sep 11, 10:03 PM ET |
| Miami Marlins @ Kansas City Royals · MLB | total 15.5 | Over @ Bally Bet + Under @ DraftKings | 0.57% | Sep 2, 10:08 PM ET |
| San Francisco Giants @ Pittsburgh Pirates · MLB | total 25.5 | Over @ DraftKings + Under @ Bally Bet | 6.99% | Sep 1, 10:26 PM ET |
| Texas Rangers @ Chicago White Sox · MLB | moneyline | Chicago White Sox @ DraftKings + Texas Rangers @ Bally Bet | 4.38% | Aug 26, 9:24 PM ET |
| Chicago Cubs @ Arizona Diamondbacks · MLB | moneyline | Arizona Diamondbacks @ DraftKings + Chicago Cubs @ Bally Bet | 1.72% | Aug 24, 10:09 PM ET |
Frequently asked questions
How often do Bally Bet and DraftKings disagree?
In the last 30 days our scanner recorded 12 game-markets where Bally Bet and DraftKings quoted the same line at prices whose implied probabilities summed to less than 100% — a cross-book arbitrage — across 12 scans. The average net edge was 4.89% and the largest 11.72%.
Which has lower vig, Bally Bet or DraftKings?
DraftKings — Bally Bet measures 5.29% overall and DraftKings measures 4.54% 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 DraftKings disagree on most?
MLB (10 game-markets, avg 4.41%); NFL (2 game-markets, avg 7.30%).
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