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.

Best WNBA Odds Today

Q: Can I still compare sportsbooks for WNBA?

No live odds are currently available for WNBA. In the meantime, check out our odds comparison page for other available options, or visit our overall Vig Index for cross-sport rankings.

WNBA Odds Not Currently Available

WNBA does not currently have odds in our data feed. When odds for events are available at sportsbooks they will be listed here. This page updates 3× daily from The Odds API — when sportsbooks begin posting WNBA lines, the full analysis will become available.

In the meantime, check out our odds comparison page for other available options.

The WNBA operates on a compressed calendar that creates unique betting opportunities distinct from other professional basketball leagues. The regular season typically runs from mid-May through early September, with playoffs extending into mid-October. Preseason championship futures and win totals usually surface in late March or early April, shortly after the WNBA Draft, giving bettors a narrow but valuable window to capitalize on early-season inefficiencies before roster compositions solidify.

Off-season futures markets in the WNBA offer several distinct betting avenues. Championship odds and conference winner markets provide the most liquidity, while MVP futures present strong value given the league's star-driven nature and relatively small player pool. Team win totals typically range from 8.5 to 25.5 games across the 40-game regular season, creating manageable numbers for handicappers. Draft-related props focus heavily on the top three picks, with position-specific betting on where certain college standouts will be selected. Free agency moves carry outsized impact due to roster limits of just 12 players per team, making supermax signings and veteran additions particularly significant for championship odds movement.

WNBA betting markets exhibit notably loose early-season lines, with sportsbooks often applying wider margins during the April futures release due to limited off-season information flow. The best value windows typically occur immediately after the draft and during the brief preseason period in May, before coaching rotations and player chemistry become apparent. Playoff margins tighten considerably, especially for series betting, as the single-elimination format creates unpredictable outcomes. Major odds movements historically stem from superstar player movements between marquee franchises, coaching changes at perennial contenders, and late-season injury reports that can dramatically shift championship probabilities in a talent-concentrated league.

In-Season Sports

These sports have active odds right now:

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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.