Fliff occupies a unique niche in the U.S. sports betting landscape, operating as a social sportsbook that uses a sweepstakes model rather than traditional real-money wagering. This approach allows Fliff to be available in a significantly larger number of states than conventional licensed sportsbooks, since it sidesteps the state-by-state licensing framework that governs operators like DraftKings or FanDuel. Users play with Fliff Coins and Fliff Cash, the latter of which can be redeemed for real prizes — a structure familiar to anyone who has used sweepstakes casinos. It's a legal gray area that Fliff navigates carefully, positioning itself as a regulated social gaming platform rather than a traditional book.
In terms of strengths, Fliff offers a clean, mobile-first interface and a surprisingly broad selection of sports and markets for a sweepstakes-based platform. The barrier to entry is low, making it easy for newcomers to get started without depositing large sums. However, the sweepstakes model comes with notable limitations. Odds competitiveness is generally weaker than what bettors will find at major licensed sportsbooks, and the redemption process for Fliff Cash can feel cumbersome compared to straightforward withdrawals at traditional books. Promotions and bonus structures, while present, don't match the depth or value offered by the larger operators competing for market share in fully regulated states.
Fliff is best suited for casual and recreational bettors — particularly those in states where legal sports betting hasn't yet launched. It provides a way to engage with real sports lines and experience the mechanics of betting without the full commitment (or full protections) of a licensed sportsbook. Sharp bettors and high-volume players will quickly find the limits, odds quality, and payout structure insufficient for serious action. For bettors who do have access to fully licensed books, Fliff is more of a supplementary option than a primary platform, but it fills a genuine gap for users in underserved markets.
Overall Vig
C
Vig by Sport
| Sport | Avg Vig | Grade |
|---|---|---|
| MMA | 6.40% | C |
| NHL | 6.57% | C |
| MLB | 6.86% | C |
| FIFA World Cup | 7.09% | D |
| NCAA Baseball | 7.94% | D |
Frequently Asked Questions
What is Fliff's average vig?
Fliff has an overall average vig of 6.97%, earning a grade of C. They cover 5 sports.
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 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.