BetMGM vs LowVig: where their odds disagree
Over the last 30 days, BetMGM and LowVig 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 2.54% and a peak of 14.55%. On plain vig, LowVig is the cheaper book of the two. Last disagreement: Sep 19, 2026.
Vig: BetMGM vs LowVig
| BetMGM | LowVig | |
|---|---|---|
| Overall overround | 4.96% | 3.68% |
| Moneyline | 4.45% | 3.06% |
| Spreads | 4.65% | 3.52% |
| Totals | 5.58% | 4.16% |
| NFL | 4.39% | 3.19% |
| MLB | 4.81% | 3.00% |
| NBA | 4.60% | 3.34% |
| NHL | 4.56% | 3.35% |
| MLS | 8.73% | 5.90% |
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 |
|---|---|---|---|---|
| Miami Marlins @ San Diego Padres · MLB | spread 1.5 | Miami Marlins @ BetMGM + San Diego Padres @ LowVig | 1.34% | Sep 18, 9:51 PM ET |
| Minnesota Twins @ Los Angeles Angels · MLB | spread 1.5 | Los Angeles Angels @ BetMGM + Minnesota Twins @ LowVig | 14.55% | Sep 18, 9:51 PM ET |
| Toronto Blue Jays @ Texas Rangers · MLB | total 7.5 | Over @ BetMGM + Under @ LowVig | 0.95% | Sep 18, 8:19 PM ET |
| Chicago White Sox @ Cleveland Guardians · MLB | total 7.0 | Over @ LowVig + Under @ BetMGM | 0.99% | Sep 16, 9:17 AM ET |
| Philadelphia Phillies @ Washington Nationals · MLB | spread 1.5 | Philadelphia Phillies @ BetMGM + Washington Nationals @ LowVig | 0.72% | Sep 15, 11:20 PM ET |
| Los Angeles Dodgers @ Cincinnati Reds · MLB | moneyline | Cincinnati Reds @ LowVig + Los Angeles Dodgers @ BetMGM | 0.59% | Sep 15, 6:44 PM ET |
| Atlanta Braves @ Chicago Cubs · MLB | total 9.5 | Over @ BetMGM + Under @ LowVig | 0.30% | Sep 14, 7:44 PM ET |
| New York Giants @ Los Angeles Rams · NFL | spread 7.0 | Los Angeles Rams @ BetMGM + New York Giants @ LowVig | 0.57% | Sep 14, 8:31 AM ET |
| Philadelphia Phillies @ Atlanta Braves · MLB | total 8.5 | Over @ LowVig + Under @ BetMGM | 3.08% | Sep 12, 7:27 PM ET |
| Houston Astros @ Philadelphia Phillies · MLB | moneyline | Houston Astros @ BetMGM + Philadelphia Phillies @ LowVig | 4.95% | Sep 8, 6:49 PM ET |
| Minnesota Twins @ Detroit Tigers · MLB | total 8.5 | Over @ LowVig + Under @ BetMGM | 1.11% | Sep 8, 6:49 PM ET |
| Washington Nationals @ San Diego Padres · MLB | spread 1.5 | San Diego Padres @ LowVig + Washington Nationals @ BetMGM | 2.75% | Sep 7, 5:17 PM ET |
| Washington Nationals @ San Diego Padres · MLB | moneyline | San Diego Padres @ LowVig + Washington Nationals @ BetMGM | 3.10% | Sep 7, 5:17 PM ET |
| Los Angeles Angels @ Pittsburgh Pirates · MLB | spread 1.5 | Los Angeles Angels @ BetMGM + Pittsburgh Pirates @ LowVig | 0.31% | Sep 5, 6:45 PM ET |
| Chicago White Sox @ Houston Astros · MLB | spread 1.5 | Chicago White Sox @ BetMGM + Houston Astros @ LowVig | 2.33% | Sep 3, 2:20 PM ET |
Frequently asked questions
How often do BetMGM and LowVig disagree?
In the last 30 days our scanner recorded 20 game-markets where BetMGM and LowVig quoted the same line at prices whose implied probabilities summed to less than 100% — a cross-book arbitrage — across 24 scans. The average net edge was 2.54% and the largest 14.55%.
Which has lower vig, BetMGM or LowVig?
LowVig — BetMGM measures 4.96% overall and LowVig measures 3.68% 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 BetMGM and LowVig disagree on most?
MLB (19 game-markets, avg 3.06%); NFL (1 game-markets, avg 0.57%).
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