Overall Comparison
Bally Bet ✔ Lower Vig
Average vig · C
BetMGM
Average vig · D
↑ 0.20% up since yesterday
Bally Bet wins on 12 of 14 sports. The biggest gap is in FIFA World Cup, where Bally Bet charges 2.55% less vig. BetMGM is only competitive in NBA and NHL.
BetMGM and Bally Bet represent two very different tiers of the US sportsbook market. BetMGM, backed by the MGM Resorts and Entain partnership, operates as one of the "Big Four" books with deep liquidity, extensive market coverage, and a mature platform refined over years of operation. Bally Bet, launched by Bally's Corporation as an extension of its casino brand, entered the market later and with a significantly smaller footprint. BetMGM targets a broad audience from casual bettors to sharper players, while Bally Bet has primarily aimed to convert existing Bally's casino customers into sports bettors, leaning on its brick-and-mortar loyalty base rather than competing head-on for market share through aggressive promotions.
A bettor might prefer Bally Bet in the limited states where it operates if they're already embedded in the Bally's casino rewards ecosystem, as cross-platform loyalty perks can add tangible value. However, for most bettors, BetMGM is the stronger choice on almost every practical metric. Its market depth spans major sports, player props, live betting, and niche leagues with consistently available lines. BetMGM also tends to post lines earlier and offers more granular same-game parlay options. Bally Bet's market selection is noticeably thinner, and its odds can lag behind the broader market in both speed and competitiveness.
Beyond vig, the operational differences matter. BetMGM's app is polished and reliable, with fast settlement times and a well-documented track record handling payouts at scale. Bally Bet has faced intermittent reports of interface sluggishness and limited customer support responsiveness — growing pains typical of a smaller operator still finding its footing. Bettors who value limit tolerance should note that BetMGM, while not the most sharp-friendly book, generally accommodates moderate volume better than Bally Bet's less liquid markets. For anyone prioritizing line quality, platform stability, and breadth of betting options, BetMGM holds a clear edge in this matchup.
Vig Comparison by Sport
Frequently Asked Questions
Is Bally Bet or BetMGM better for odds?
Bally Bet currently offers lower vig overall. Bally Bet averages 6.43% vig (C) while BetMGM averages 7.39% vig (D).
How does Bally Bet compare to BetMGM 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.
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.
Why does lower vig matter for bettors?
Lower vig directly impacts your long-term returns. A bettor placing $1,000 per week at a book with 4% vig loses roughly $40/week to the house edge. At 2% vig, that drops to $20/week — a $1,040 difference over a year. For serious bettors, shopping for lower vig is one of the most reliable ways to improve profitability.
What sportsbooks do you track?
We track both regulated US sportsbooks (DraftKings, FanDuel, BetMGM, Caesars) and offshore books (Bovada, BetOnline, MyBookie, BetUS, LowVig.ag, BetAnySports). Data comes from The Odds API, which aggregates real-time lines from licensed sources.
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.