↓ 7-day trend: Average vig has improved by 0.16 percentage points over the past week (from 5.90% to 5.75%). Sportsbooks are tightening their lines — a good sign for bettors.
The top 6 books are tightly clustered — only 0.42% separates them. The spread between #1 and #9 is 5.00% — book choice matters significantly for WNCAAB. Vig is trending down 0.13% since yesterday.
Women's college basketball presents a distinctive betting landscape shaped by significant talent concentration and wide competitive gaps between programs. Unlike the men's game or professional leagues, a handful of powerhouse programs — South Carolina, UConn, LSU, Iowa, USC — routinely dominate, which means point spreads of 25 or more are common in non-conference and early-round tournament matchups. Scoring tends to be lower and possessions slightly fewer per game compared to the men's side, which compresses totals markets and makes each possession more impactful from a betting perspective. Market depth is thinner than WNCAAB's male counterpart: fewer books offer full slates of player props or alternate lines, and betting limits are generally lower, meaning sharp action can move lines quickly.
Vig in WNCAAB markets tends to run wider than in higher-profile sports. Because betting volume is lower and oddsmakers invest less modeling infrastructure in these lines, sportsbooks build in extra margin to protect themselves against information asymmetry. It's not unusual to see effective vig of 7–10% on sides and totals for mid-major or lower-profile matchups, compared to the 4–5% standard in NFL or NBA markets. This makes shopping across books especially valuable — the difference between the sharpest and softest price on the same game can be substantial, particularly for less marquee matchups that only a handful of books even post.
The WNCAAB season runs from early November through the national championship in early April, with conference tournaments and the NCAA Tournament in March creating the most liquid and competitive odds markets. Vig tends to tighten noticeably during March Madness as public betting volume surges and books compete for action on nationally televised games. During the regular season, home-court advantage is a critical factor — programs like South Carolina and LSU are nearly unbeatable at home, and the spread often reflects that. Bettors should also monitor roster availability closely: with the transfer portal reshaping rosters annually and star players occasionally sitting out mid-major games, injury and lineup news can move lines dramatically in a sport where one player frequently accounts for an outsized share of a team's production.
WNCAAB Sportsbook Vig Rankings
| # | Sportsbook | Avg Vig | Grade | 24h | Moneyline | Spreads | Totals | Events |
|---|---|---|---|---|---|---|---|---|
| 1 | DraftKings | 4.54% | B | ↓ 0.01% | 4.21% | 4.67% | 4.73% | 2 |
| 2 | Fanatics | 4.55% | B | ↓ 1.18% | 4.24% | 4.71% | 4.71% | 2 |
| 3 | Caesars | 4.63% | B | — | 4.39% | 4.73% | 4.76% | 2 |
| 4 | Bally Bet | 4.80% | B | ↓ 0.22% | 4.78% | 4.65% | 4.96% | 2 |
| 5 | BetMGM | 4.93% | B | ↑ 0.24% | 4.44% | 4.73% | 5.61% | 2 |
| 6 | FanDuel | 4.96% | B | ↑ 0.01% | 5.12% | 5.03% | 4.72% | 2 |
| 7 | theScore Bet (ESPN Bet) | 6.67% | C | ↑ 0.02% | 6.22% | 6.85% | 6.93% | 2 |
| 8 | BetRivers | 7.10% | D | ↑ 0.04% | 6.94% | 6.99% | 7.38% | 2 |
| 9 | Fliff | 9.54% | D- | ↓ 0.03% | 7.92% | 10.61% | 10.10% | 2 |
Best Line Leaders
Which sportsbook offers the best odds most often across 2 events:
| # | Sportsbook | Best Lines |
|---|---|---|
| 1 | FanDuel | 5 |
| 2 | Caesars | 3 |
| 3 | DraftKings | 3 |
| 4 | Bally Bet | 3 |
| 5 | Fanatics | 2 |
| 6 | BetMGM | 1 |
| 7 | theScore Bet (ESPN Bet) | 1 |
Frequently Asked Questions
Which sportsbook has the lowest vig for WNCAAB?
DraftKings currently has the lowest average vig for WNCAAB at 4.54%, earning a grade of B.
How do sportsbook odds compare for WNCAAB?
We compare 9 sportsbooks for WNCAAB. The vig ranges from 4.54% (DraftKings) to 9.54% (Fliff).
When do small vig differences matter for WNCAAB?
The top two books (DraftKings and Fanatics) are separated by just 0.01%. While small, this adds up over volume — a bettor placing $1,000/week saves roughly $0 per week by choosing the lower-vig book.
Is WNCAAB vig getting better or worse?
WNCAAB vig is currently improving (decreasing). Average vig has shifted by 0.13 percentage points since yesterday. We track these changes daily to help bettors identify the best windows for placing wagers.
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.