Overall Comparison
BetMGM
Average vig · D
↑ 0.20% up since yesterday
BetOnline.ag ✔ Lower Vig
Average vig · B
↑ 0.15% up since yesterday
BetOnline.ag wins on 28 of 29 sports. The biggest gap is in FIFA World Cup, where BetOnline.ag charges 5.64% less vig. BetMGM is only competitive in FA Cup.
BetMGM and BetOnline.ag represent two fundamentally different models in sports betting. BetMGM operates as a fully regulated U.S. sportsbook, backed by MGM Resorts' extensive casino infrastructure and licensed state by state. BetOnline.ag is an offshore book based in Panama, operating outside U.S. regulatory frameworks. This distinction shapes nearly everything about the two platforms — from how they handle deposits and withdrawals to how aggressively they shade their lines. BetMGM tends to price markets with mainstream recreational bettors in mind, often carrying higher vig on popular sports while offering competitive odds on marquee events where they want to attract volume. BetOnline.ag, competing for a global and often more experienced clientele, frequently posts sharper lines and is generally more tolerant of winning players, though its vig structure can vary significantly across less popular markets.
A bettor's preference between these two books often comes down to priorities. Recreational bettors who value a polished mobile experience, frequent promotions, and the security of regulated payouts will gravitate toward BetMGM. Its app is among the best in the legal U.S. market, and deposits and withdrawals are straightforward through standard banking methods. BetOnline.ag appeals more to bettors who need access to a broader range of markets — including props, international leagues, and alternative lines — or who live in states without legal sports betting. Sharp bettors may also prefer BetOnline.ag for its historically higher limits on certain markets and its willingness to book action that regulated books might restrict.
Beyond vig, bettors should weigh several practical factors. BetMGM offers the legal protections of state regulation, meaning disputes can be escalated to gaming commissions and funds are held in compliance with strict requirements. BetOnline.ag lacks that recourse — payouts are generally reliable but processed primarily through cryptocurrency or slower traditional methods, and bettors have no regulatory body to appeal to if issues arise. Line availability and speed also differ: BetMGM tends to post lines later and pull them faster around injury news, while BetOnline.ag often has markets up earlier and leaves them available longer. The live vig data on this page will show where each book is currently offering better value on specific matchups, which is ultimately the most actionable comparison point.
Vig Comparison by Sport
| Sport | BetMGM | BetOnline.ag | Winner |
|---|---|---|---|
| NCAAF | — | — | — |
| AFL | — | — | — |
| MLB | 4.45% | — | — |
| MLB Preseason | 4.86% | — | — |
| NCAA Baseball | 8.22% | — | — |
| Basketball Euroleague | 5.14% | — | — |
| NBA | 5.24% | 4.43% | BetOnline.ag |
| Boxing | — | 6.02% | — |
| International Twenty20 | — | — | — |
| IPL | — | — | — |
| One Day Internationals | — | — | — |
| AHL | — | — | — |
| Liiga | — | — | — |
| Mestis | — | — | — |
| NHL | 4.72% | 3.41% | BetOnline.ag |
| HockeyAllsvenskan | — | — | — |
| SHL | — | — | — |
| NCAA Lacrosse | 6.60% | — | — |
| MMA | 5.30% | 3.79% | BetOnline.ag |
| NRL | — | — | — |
| State of Origin | — | — | — |
| Primera División - Argentina | 8.11% | 4.67% | BetOnline.ag |
| A-League | 8.20% | 4.81% | BetOnline.ag |
| Austrian Football Bundesliga | 8.26% | — | — |
| Belgium First Div | 7.13% | — | — |
| Brazil Série A | 7.32% | 4.79% | BetOnline.ag |
| Brazil Série B | 9.18% | — | — |
| Primera División - Chile | 8.25% | 4.52% | BetOnline.ag |
| Super League - China | — | — | — |
| Denmark Superliga | 8.55% | 4.37% | BetOnline.ag |
| Championship | 7.20% | 5.30% | BetOnline.ag |
| EFL Cup | 7.13% | 5.11% | BetOnline.ag |
| League 1 | 8.03% | 5.91% | BetOnline.ag |
| League 2 | 8.08% | 6.19% | BetOnline.ag |
| EPL | 6.92% | 4.15% | BetOnline.ag |
| FA Cup | 7.23% | 8.86% | BetMGM |
| FIFA World Cup | 9.85% | 4.21% | BetOnline.ag |
| FIFA World Cup Qualifiers - Europe | — | 5.39% | — |
| Coupe de France | — | — | — |
| Ligue 1 - France | 6.91% | 4.28% | BetOnline.ag |
| Ligue 2 - France | 8.10% | 4.34% | BetOnline.ag |
| Bundesliga - Germany | 7.05% | 4.29% | BetOnline.ag |
| Bundesliga 2 - Germany | 7.20% | — | — |
| Frauen-Bundesliga | — | — | — |
| DFB-Pokal | — | — | — |
| 3. Liga - Germany | — | — | — |
| Super League - Greece | — | — | — |
| Serie A - Italy | 6.85% | 4.25% | BetOnline.ag |
| Serie B - Italy | 7.97% | 4.88% | BetOnline.ag |
| J League | 8.24% | — | — |
| K League 1 | 8.12% | 5.01% | BetOnline.ag |
| League of Ireland | 9.24% | 4.57% | BetOnline.ag |
| Liga MX | 7.56% | 4.28% | BetOnline.ag |
| Dutch Eredivisie | 7.33% | — | — |
| Eliteserien - Norway | — | — | — |
| Ekstraklasa - Poland | 7.95% | 4.62% | BetOnline.ag |
| Primeira Liga - Portugal | 8.17% | — | — |
| Premier League - Russia | — | — | — |
| Copa del Rey | 6.86% | — | — |
| La Liga - Spain | 6.93% | 4.22% | BetOnline.ag |
| La Liga 2 - Spain | 9.19% | 4.02% | BetOnline.ag |
| Premiership - Scotland | 7.83% | — | — |
| Allsvenskan - Sweden | — | — | — |
| Swiss Superleague | 8.22% | — | — |
| Turkey Super League | — | 4.51% | — |
| UEFA Champions League | 6.83% | 4.33% | BetOnline.ag |
| UEFA Europa Conference League | 9.13% | 5.06% | BetOnline.ag |
| UEFA Europa League | 6.76% | 4.99% | BetOnline.ag |
| MLS | — | 4.15% | — |
| ATP Indian Wells | 6.32% | — | — |
| WTA Miami Open | — | 4.32% | — |
Frequently Asked Questions
Is BetMGM or BetOnline.ag better for odds?
BetOnline.ag currently offers lower vig overall. BetMGM averages 7.39% vig (D) while BetOnline.ag averages 4.77% vig (B).
How does BetMGM compare to BetOnline.ag by sport?
We compare both books across 71 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.
Is BetOnline good for sharp bettors?
BetOnline is one of the sharper offshore books. They offer relatively high limits, competitive vig, and are slower to limit winning bettors compared to recreational sites. They're a popular choice for serious bettors alongside Pinnacle and BetAnySports.
What sports does BetOnline cover?
BetOnline covers a wide range of sports including NFL, NBA, MLB, NHL, NCAAF, NCAAB, UFC/MMA, soccer, tennis, golf, and many international sports. They're known for having one of the broadest market offerings among offshore sportsbooks.
How does BetOnline handle payouts?
BetOnline offers payouts via cryptocurrency (fastest, usually same day), check by courier (7–14 days), and bank wire (5–7 days). They provide one free payout per month, with fees for additional withdrawals depending on the method.
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 exceptional and rare — these are typically sharp-friendly books. A (2–3%) is excellent. B+ (3–4%) is above average. B (4–5%) is the industry standard for most recreational sportsbooks. C (5–6%) is below average. D (above 6%) indicates high-juice markets where bettors face a steep cost per wager.
- 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.