BetMGM vs ReBet: where their odds disagree
Over the last 30 days, BetMGM and ReBet quoted the same line at prices that summed to less than 100% on 61 game-markets — a cross-book arbitrage — with an average net edge of 4.20% and a peak of 14.44%. On plain vig, BetMGM is the cheaper book of the two. Last disagreement: Sep 19, 2026.
Vig: BetMGM vs ReBet
| BetMGM | ReBet | |
|---|---|---|
| Overall overround | 4.96% | 6.66% |
| Moneyline | 4.45% | 5.93% |
| Spreads | 4.65% | 7.20% |
| Totals | 5.58% | 6.86% |
| NFL | 4.39% | 6.33% |
| MLB | 4.81% | 6.47% |
| NBA | 4.60% | 6.31% |
| NHL | 4.56% | 7.93% |
| MLS | 8.73% | — |
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 | spread 2.5 | Chicago White Sox @ BetMGM + Detroit Tigers @ ReBet | 3.31% | Sep 18, 11:07 PM ET |
| Atlanta Braves @ Houston Astros · MLB | spread 1.5 | Atlanta Braves @ ReBet + Houston Astros @ BetMGM | 1.91% | Sep 18, 9:20 PM ET |
| Atlanta Braves @ Houston Astros · MLB | moneyline | Atlanta Braves @ ReBet + Houston Astros @ BetMGM | 4.99% | Sep 18, 9:20 PM ET |
| Detroit Tigers @ Chicago White Sox · MLB | total 5.5 | Over @ BetMGM + Under @ ReBet | 0.72% | Sep 17, 9:34 PM ET |
| Los Angeles Dodgers @ Cincinnati Reds · MLB | spread 4.5 | Cincinnati Reds @ BetMGM + Los Angeles Dodgers @ ReBet | 1.65% | Sep 17, 1:26 PM ET |
| Kansas City Royals @ Houston Astros · MLB | total 6.5 | Over @ BetMGM + Under @ ReBet | 3.51% | Sep 16, 10:30 PM ET |
| Milwaukee Brewers @ Pittsburgh Pirates · MLB | total 8.5 | Over @ ReBet + Under @ BetMGM | 1.91% | Sep 16, 7:13 PM ET |
| San Diego Padres @ Colorado Rockies · MLB | spread 3.5 | Colorado Rockies @ BetMGM + San Diego Padres @ ReBet | 1.91% | Sep 15, 10:50 PM ET |
| Philadelphia Phillies @ Washington Nationals · MLB | total 10.5 | Over @ BetMGM + Under @ ReBet | 1.23% | Sep 15, 7:46 PM ET |
| Washington Commanders @ Philadelphia Eagles · NFL | moneyline | Philadelphia Eagles @ BetMGM + Washington Commanders @ ReBet | 7.10% | Sep 13, 7:05 PM ET |
| Seattle Mariners @ Athletics · MLB | spread 3.5 | Athletics @ ReBet + Seattle Mariners @ BetMGM | 3.24% | Sep 13, 5:49 PM ET |
| Arizona Cardinals @ Los Angeles Chargers · NFL | moneyline | Arizona Cardinals @ BetMGM + Los Angeles Chargers @ ReBet | 1.57% | Sep 13, 5:19 PM ET |
| Los Angeles Dodgers @ Miami Marlins · MLB | total 3.5 | Over @ BetMGM + Under @ ReBet | 5.25% | Sep 13, 4:02 PM ET |
| Chicago White Sox @ St. Louis Cardinals · MLB | moneyline | Chicago White Sox @ ReBet + St. Louis Cardinals @ BetMGM | 2.25% | Sep 12, 7:43 PM ET |
| Baltimore Orioles @ Toronto Blue Jays · MLB | spread 4.5 | Baltimore Orioles @ ReBet + Toronto Blue Jays @ BetMGM | 9.56% | Sep 12, 5:40 PM ET |
Frequently asked questions
How often do BetMGM and ReBet disagree?
In the last 30 days our scanner recorded 61 game-markets where BetMGM and ReBet quoted the same line at prices whose implied probabilities summed to less than 100% — a cross-book arbitrage — across 61 scans. The average net edge was 4.20% and the largest 14.44%.
Which has lower vig, BetMGM or ReBet?
BetMGM — BetMGM measures 4.96% overall and ReBet measures 6.66% 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 ReBet disagree on most?
MLB (59 game-markets, avg 4.20%); NFL (2 game-markets, avg 4.33%).
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