Bally Bet vs Hard Rock Bet: where their odds disagree
Over the last 30 days, Bally Bet and Hard Rock Bet quoted the same line at prices that summed to less than 100% on 17 game-markets — a cross-book arbitrage — with an average net edge of 3.31% and a peak of 12.90%. On plain vig, Hard Rock Bet is the cheaper book of the two. Last disagreement: Sep 15, 2026.
Vig: Bally Bet vs Hard Rock Bet
| Bally Bet | Hard Rock Bet | |
|---|---|---|
| Overall overround | 5.29% | 4.63% |
| Moneyline | 4.81% | 4.19% |
| Spreads | 5.14% | 5.07% |
| Totals | 5.70% | 4.63% |
| NFL | 4.89% | 4.57% |
| MLB | 5.51% | 3.86% |
| NBA | 4.84% | — |
| NHL | 5.13% | 5.33% |
| MLS | 6.48% | — |
Disagreements by sport
| Sport | Game-markets | Avg net edge | Max net edge |
|---|---|---|---|
| MLB | 17 | 3.31% | 12.90% |
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 |
|---|---|---|---|---|
| New York Yankees @ Minnesota Twins · MLB | moneyline | Minnesota Twins @ Hard Rock Bet + New York Yankees @ Bally Bet | 11.86% | Sep 14, 9:01 PM ET |
| Arizona Diamondbacks @ Kansas City Royals · MLB | spread 3.5 | Arizona Diamondbacks @ Bally Bet + Kansas City Royals @ Hard Rock Bet | 2.53% | Sep 9, 10:21 PM ET |
| Arizona Diamondbacks @ Kansas City Royals · MLB | total 5.5 | Over @ Hard Rock Bet + Under @ Bally Bet | 1.15% | Sep 8, 8:52 PM ET |
| Toronto Blue Jays @ Kansas City Royals · MLB | total 7.5 | Over @ Bally Bet + Under @ Hard Rock Bet | 3.36% | Sep 6, 4:55 PM ET |
| San Francisco Giants @ New York Mets · MLB | spread 6.5 | New York Mets @ Bally Bet + San Francisco Giants @ Hard Rock Bet | 8.77% | Sep 4, 9:00 PM ET |
| San Francisco Giants @ Pittsburgh Pirates · MLB | total 9.5 | Over @ Bally Bet + Under @ Hard Rock Bet | 0.42% | Sep 2, 9:38 PM ET |
| San Diego Padres @ Cincinnati Reds · MLB | moneyline | Cincinnati Reds @ Hard Rock Bet + San Diego Padres @ Bally Bet | 2.12% | Sep 2, 2:45 PM ET |
| San Diego Padres @ Cincinnati Reds · MLB | spread 1.5 | Cincinnati Reds @ Hard Rock Bet + San Diego Padres @ Bally Bet | 10.35% | Sep 1, 9:25 PM ET |
| San Francisco Giants @ Pittsburgh Pirates · MLB | spread 1.5 | Pittsburgh Pirates @ Hard Rock Bet + San Francisco Giants @ Bally Bet | 0.48% | Sep 1, 7:51 AM ET |
| Athletics @ Texas Rangers · MLB | spread 6.5 | Athletics @ Bally Bet + Texas Rangers @ Hard Rock Bet | 12.29% | Aug 31, 10:41 PM ET |
| Athletics @ Texas Rangers · MLB | total 9.5 | Over @ Bally Bet + Under @ Hard Rock Bet | 12.90% | Aug 31, 10:41 PM ET |
| Texas Rangers @ Chicago White Sox · MLB | spread 1.5 | Chicago White Sox @ Hard Rock Bet + Texas Rangers @ Bally Bet | 6.11% | Aug 26, 9:24 PM ET |
| Tampa Bay Rays @ Detroit Tigers · MLB | spread 1.5 | Detroit Tigers @ Hard Rock Bet + Tampa Bay Rays @ Bally Bet | 0.91% | Aug 25, 8:22 AM ET |
| Cleveland Guardians @ Los Angeles Angels · MLB | spread 1.5 | Cleveland Guardians @ Hard Rock Bet + Los Angeles Angels @ Bally Bet | 1.65% | Aug 24, 10:41 AM ET |
| Cleveland Guardians @ Los Angeles Angels · MLB | moneyline | Cleveland Guardians @ Hard Rock Bet + Los Angeles Angels @ Bally Bet | 1.69% | Aug 24, 10:41 AM ET |
Frequently asked questions
How often do Bally Bet and Hard Rock Bet disagree?
In the last 30 days our scanner recorded 17 game-markets where Bally Bet and Hard Rock Bet quoted the same line at prices whose implied probabilities summed to less than 100% — a cross-book arbitrage — across 25 scans. The average net edge was 3.31% and the largest 12.90%.
Which has lower vig, Bally Bet or Hard Rock Bet?
Hard Rock Bet — Bally Bet measures 5.29% overall and Hard Rock Bet measures 4.63% 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 Hard Rock Bet disagree on most?
MLB (17 game-markets, avg 3.31%).
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