BetMGM vs Caesars: where their odds disagree
Over the last 30 days, BetMGM and Caesars quoted the same line at prices that summed to less than 100% on 95 game-markets — a cross-book arbitrage — with an average net edge of 4.11% and a peak of 14.88%. On plain vig, BetMGM is the cheaper book of the two. Last disagreement: Sep 19, 2026.
Vig: BetMGM vs Caesars
| BetMGM | Caesars | |
|---|---|---|
| Overall overround | 4.96% | 5.78% |
| Moneyline | 4.45% | 5.12% |
| Spreads | 4.65% | 6.09% |
| Totals | 5.58% | 6.16% |
| NFL | 4.39% | 6.12% |
| MLB | 4.81% | 4.13% |
| NBA | 4.60% | 4.58% |
| NHL | 4.56% | 4.67% |
| 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 |
|---|---|---|---|---|
| San Francisco Giants @ Los Angeles Dodgers · MLB | moneyline | Los Angeles Dodgers @ Caesars + San Francisco Giants @ BetMGM | 0.74% | Sep 18, 11:53 PM ET |
| Seattle Mariners @ Colorado Rockies · MLB | moneyline | Colorado Rockies @ BetMGM + Seattle Mariners @ Caesars | 2.73% | Sep 18, 9:51 PM ET |
| Washington Nationals @ St. Louis Cardinals · MLB | moneyline | St. Louis Cardinals @ BetMGM + Washington Nationals @ Caesars | 5.48% | Sep 18, 8:50 PM ET |
| Philadelphia Phillies @ New York Mets · MLB | moneyline | New York Mets @ Caesars + Philadelphia Phillies @ BetMGM | 0.64% | Sep 18, 7:48 PM ET |
| Detroit Tigers @ Chicago White Sox · MLB | moneyline | Chicago White Sox @ BetMGM + Detroit Tigers @ Caesars | 0.69% | Sep 17, 8:33 PM ET |
| Philadelphia Phillies @ New York Mets · MLB | total 4.5 | Over @ BetMGM + Under @ Caesars | 0.70% | Sep 17, 8:33 PM ET |
| Athletics @ Tampa Bay Rays · MLB | total 9.5 | Over @ BetMGM + Under @ Caesars | 3.65% | Sep 17, 2:27 PM ET |
| Los Angeles Dodgers @ Cincinnati Reds · MLB | total 11.5 | Over @ BetMGM + Under @ Caesars | 0.46% | Sep 17, 12:56 PM ET |
| Kansas City Royals @ Houston Astros · MLB | moneyline | Houston Astros @ BetMGM + Kansas City Royals @ Caesars | 13.83% | Sep 16, 10:15 PM ET |
| Detroit Tigers @ Toronto Blue Jays · MLB | total 7.5 | Over @ BetMGM + Under @ Caesars | 2.93% | Sep 16, 4:56 PM ET |
| New York Yankees @ Minnesota Twins · MLB | spread 1.5 | Minnesota Twins @ BetMGM + New York Yankees @ Caesars | 0.59% | Sep 16, 3:39 PM ET |
| New York Yankees @ Minnesota Twins · MLB | total 10.5 | Over @ BetMGM + Under @ Caesars | 7.27% | Sep 15, 9:33 PM ET |
| Kansas City Royals @ Houston Astros · MLB | spread 1.5 | Houston Astros @ Caesars + Kansas City Royals @ BetMGM | 0.66% | Sep 15, 8:47 PM ET |
| Philadelphia Phillies @ Washington Nationals · MLB | spread 2.5 | Philadelphia Phillies @ Caesars + Washington Nationals @ BetMGM | 0.87% | Sep 15, 8:47 PM ET |
| Baltimore Orioles @ New York Mets · MLB | total 10.5 | Over @ BetMGM + Under @ Caesars | 0.46% | Sep 15, 8:01 PM ET |
Frequently asked questions
How often do BetMGM and Caesars disagree?
In the last 30 days our scanner recorded 95 game-markets where BetMGM and Caesars quoted the same line at prices whose implied probabilities summed to less than 100% — a cross-book arbitrage — across 98 scans. The average net edge was 4.11% and the largest 14.88%.
Which has lower vig, BetMGM or Caesars?
BetMGM — BetMGM measures 4.96% overall and Caesars measures 5.78% 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 Caesars disagree on most?
MLB (93 game-markets, avg 4.12%); NFL (2 game-markets, avg 3.60%).
← all sportsbooks · BetMGM · Caesars · what arbitrage is · dutching calculator