Overall Comparison
BetMGM ✔ Lower Vig
Average vig · C
↑ 0.18% up since yesterday
BetRivers
Average vig · D
↑ 0.16% up since yesterday
7-day trend: BetMGM has worsened by 0.33% over the past week; BetRivers has worsened by 0.08%.
BetMGM wins on 11 of 15 sports. The biggest gap is in MLB, where BetMGM charges 3.97% less vig.
Vig Comparison by Sport
| Sport | BetMGM | BetRivers | Winner |
|---|---|---|---|
| CFL | 4.70% | 5.51% | BetMGM |
| NCAAF | 4.75% | 5.60% | BetMGM |
| NFL | 4.59% | 5.50% | BetMGM |
| NFL Preseason | — | — | — |
| AFL | — | — | — |
| MiLB | — | 7.63% | — |
| MLB | 5.06% | 9.03% | BetMGM |
| NCAA Baseball | 6.63% | 7.73% | BetMGM |
| WNBA | 4.64% | 5.41% | BetMGM |
| Boxing | 7.11% | 6.57% | BetRivers |
| International Twenty20 | — | — | — |
| One Day Internationals | — | — | — |
| Test Matches | — | 6.32% | — |
| NHL | 4.73% | 5.70% | BetMGM |
| PLL | 4.75% | 5.95% | BetMGM |
| MMA | 4.37% | 5.05% | BetMGM |
| NRL | — | 5.81% | — |
| State of Origin | — | — | — |
| Brazil Série B | 9.64% | 9.15% | BetRivers |
| Primera División - Chile | 9.13% | 9.05% | BetRivers |
| Super League - China | — | — | — |
| Copa Libertadores | — | 7.55% | — |
| Copa Sudamericana | — | — | — |
| FIFA World Cup | 7.77% | 5.76% | BetRivers |
| Veikkausliiga - Finland | 8.11% | 9.14% | BetMGM |
| DFB-Pokal | 5.52% | — | — |
| League of Ireland | — | 9.02% | — |
| Eliteserien - Norway | — | 8.38% | — |
| La Liga 2 - Spain | 9.38% | — | — |
| Allsvenskan - Sweden | — | 9.98% | — |
| Superettan - Sweden | 8.85% | 9.16% | BetMGM |
Frequently Asked Questions
Is BetMGM or BetRivers better for odds?
BetMGM currently offers lower vig overall. BetMGM averages 6.45% vig (C) while BetRivers averages 7.23% vig (D).
How does BetMGM compare to BetRivers by sport?
We compare both books across 31 sports. The comparison covers vig percentages, grades, and which book offers better odds per sport.
How does BetMGM vig rank among regulated books?
BetMGM typically sits in the middle of the pack among regulated US sportsbooks. Their vig is comparable to DraftKings and FanDuel, though it varies by sport and market. They compete primarily on brand recognition and their MGM Rewards loyalty program.
Does BetMGM have good odds for any specific sport?
BetMGM occasionally offers competitive pricing on NBA and NHL markets where they have strong trading desks. However, their overall vig profile is similar to other regulated books. Check our sport-by-sport breakdown above for current rankings.
How does BetRivers vig compare to other regulated books?
BetRivers typically offers competitive vig among regulated US sportsbooks, often on par with or slightly better than DraftKings and FanDuel on select markets. They are operated by Rush Street Interactive, which also runs PlaySugarHouse and BetRivers in multiple states.
In which states is BetRivers available?
BetRivers operates in multiple US states including Illinois, Indiana, Colorado, Virginia, Michigan, Pennsylvania, New Jersey, New York, Ohio, Maryland, Louisiana, and others. Availability continues to expand as more states legalize sports betting.
Does BetRivers limit winning bettors?
BetRivers may limit or restrict consistently profitable accounts, which is standard practice among regulated US sportsbooks. However, some bettors report that BetRivers is somewhat more tolerant than DraftKings and FanDuel when it comes to bet limits.
What is vig (vigorish) in sports betting?
Vig — short for vigorish, also called juice or overround — is the margin a sportsbook builds into its odds. It's the difference between the true probability of an outcome and what the odds imply. Lower vig means you keep more of your winnings on every bet. For example, a standard -110/-110 line has about 4.76% vig.
How often is this data updated?
We pull fresh odds from The Odds API three times per day — at 6:00 AM, 2:00 PM, and 10:00 PM UTC. Each snapshot captures the latest lines from every sportsbook that has posted odds. The timestamp at the top of the page shows the most recent refresh.
How is the vig grade calculated?
Each sportsbook is graded on a letter scale based on average vig: A+ (under 2%) is exceptional, A (2–3%) is excellent, B+ (3–4%) is above average, B (4–5%) is the industry standard, C (5–6%) is below average, and D (above 6%) indicates high-juice markets.
How We Calculate These Numbers
- Data Source
- All odds on this page come from The Odds API, which aggregates real-time lines from licensed US and offshore sportsbooks. We track moneyline, spread, and totals markets across every sport with active betting lines.
- Update Frequency
- We pull a fresh snapshot of every tracked market three times per day — at 6:00 AM, 2:00 PM, and 10:00 PM UTC. Each snapshot captures the latest lines from every sportsbook that has posted odds for a given event. The timestamp at the top of each page tells you exactly when the data was last refreshed.
- Vig Calculation
- Vig (short for vigorish, also called juice or overround) measures the margin a sportsbook builds into its odds. We calculate it by converting the odds on each side of a market to implied probabilities, summing those probabilities, and subtracting 100%. For example, a market priced at -110/-110 implies 52.38% on each side — a total of 104.76%, meaning a vig of 4.76%. Lower vig means better value for bettors because you keep more of your winnings.
- Per-Market Breakdown
- We compute vig separately for each market type: moneyline (h2h), point spreads, and totals (over/under). The "average vig" shown for each sportsbook is the mean across all market types weighted by the number of events sampled in each market.
- Grading Scale
- Every sportsbook receives a letter grade based on its average vig: A+ (under 2%) is exchange-level pricing. A (2–3%) is very competitive. B+ (3–4%) is above average. B (4–5%) is the industry standard — a -110/-110 line is 4.76%. C+ (5–6%) is slightly below average. C (6–7%) is below average. D (7–8%) is high vig. D− (8–10%) is very high vig. F (10%+) is predatory pricing. See the full Vig Index Methodology for formulas, worked examples, and known limitations.
- Trend Tracking
- We store daily snapshots for 30 days, allowing us to show 24-hour and 7-day vig trends. A downward trend (improving) means sportsbooks are tightening their lines — often in response to increased competition or higher betting volume as a season heats up.