Overall Comparison
BetMGM ✔ Lower Vig
Average vig · D
↑ 0.20% up since yesterday
Fliff
Average vig · D-
↑ 0.08% up since yesterday
BetMGM wins on 19 of 19 sports. The biggest gap is in NCAA Lacrosse, where BetMGM charges 3.75% less vig.
BetMGM and Fliff represent fundamentally different approaches to sports betting in the U.S. market. BetMGM is a traditional, full-scale sportsbook backed by MGM Resorts, one of the largest gaming companies in the world. It operates with a conventional model: real-money wagering, deep market coverage, and an extensive promotional ecosystem that includes deposit bonuses, parlay boosts, and loyalty rewards tied to the broader MGM ecosystem. Fliff, by contrast, entered the market as a social sportsbook using a sweepstakes-based model, which allowed it to operate in states where traditional sports betting isn't yet legal. While Fliff has expanded into regulated real-money betting in select states, its roots and primary audience skew toward casual bettors and users in underserved markets looking for a lighter, more accessible entry point into sports wagering.
The choice between these two books often comes down to what a bettor prioritizes. BetMGM is the clear pick for serious or high-volume bettors who need broad market depth, competitive odds across major and niche sports, and reliable access to same-game parlays, live betting, and player prop markets. Its vig tends to be competitive with other tier-one books, though not always the sharpest. Fliff may appeal to recreational bettors who value simplicity, or those in states where BetMGM isn't available. Its odds and market selection are more limited, and its sweepstakes model introduces a layer of complexity around how winnings are earned and redeemed.
Beyond vig, bettors should weigh several practical factors. BetMGM offers higher betting limits, faster and more transparent withdrawal processes, and a polished mobile app with years of refinement. Its integration with MGM's loyalty program adds tangible value for frequent bettors. Fliff's interface is clean and mobile-first, but its betting limits are lower, market availability is narrower, and the payout process — particularly under its sweepstakes model — can feel less straightforward. For bettors in regulated states who are shopping for the best line, BetMGM will almost always be the more robust and reliable option.
Vig Comparison by Sport
Frequently Asked Questions
Is BetMGM or Fliff better for odds?
BetMGM currently offers lower vig overall. BetMGM averages 7.39% vig (D) while Fliff averages 9.28% vig (D-).
How does BetMGM compare to Fliff by sport?
We compare both books across 71 sports. The comparison covers vig percentages, grades, and which book offers better odds per sport.
Does BetMGM beat the other book in every sport?
Yes — BetMGM has lower vig across all 19 sports we track. While it wins overall, the margin varies by sport, so it's worth checking specific sports for the full picture.
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.