The AgentBets Vig Index ranks US sportsbooks by pricing efficiency across dozens of sports, updated 3x daily. Every percentage point of vig is money off the table — for human bettors and autonomous agents alike.
This page summarizes vig rankings in one place. For game-by-game odds, best lines, and pairwise book comparisons, explore the full odds comparison hub or start from the Odds & Rankings directory.
Start Here
- Learn the math: How to Calculate Vig explains overround, implied probability, and the exact formula behind these rankings.
- Find the best lines faster: Best Sportsbook Odds by Sport and the full Comparisons hub turn these rankings into book-by-book decisions.
- Shop lower-juice books: Reduced Juice Sportsbooks and Vig Shopping Strategy show how to use the rankings in practice.
- Pick the right book type: Use the Offshore Sportsbooks hub, Regulated Sportsbooks hub, and Sportsbook API hub to decide where these prices are actually actionable.
Overall Sportsbook Rankings
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Dive deeper: Browse all sportsbook odds pages for game-level data, or see the full vig breakdown by sport and market.
What the Grades Mean
The grading scale maps average overround to a letter grade. For reference, a standard -110/-110 two-way line equals 4.76% vig — that’s a B.
| Grade | Avg Overround | What It Means |
|---|---|---|
| A+ | < 2.0% | Exchange-level pricing. Pinnacle territory. |
| A | < 3.5% | Very competitive. You’re getting sharp lines. |
| B+ | < 4.5% | Above average. Better than most US retail books. |
| B | < 6.0% | Standard US sportsbook range. The -110/-110 baseline. |
| C | < 8.0% | Below average. You’re paying a premium. |
| D | < 10.0% | High vig. Consider alternatives. |
| F | ≥ 10.0% | Predatory pricing. Avoid. |
Rankings by Sport
Vig varies significantly by sport. A book with sharp NFL lines might gouge you on NBA totals. These per-sport breakdowns show where each book actually competes.
NFL
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Full NFL odds across all books → | NFL vig deep-dive → | Best NFL Odds →
NBA
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Full NBA odds across all books → | NBA vig deep-dive → | Best NBA Odds →
MLB
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Full MLB odds across all books → | MLB vig deep-dive → | Best MLB Odds →
NHL
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Full NHL odds across all books → | NHL vig deep-dive → | Best NHL Odds →
NCAAF
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Full NCAAF odds across all books → | NCAAF vig deep-dive → | Best NCAAF Odds →
NCAAB
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Full NCAAB odds across all books → | NCAAB vig deep-dive → | Best NCAAB Odds →
Soccer (EPL)
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Soccer uses a 3-way moneyline (Home/Draw/Away), so the vig calculation includes all three outcomes. Overround is typically higher than 2-way markets.
Full Soccer odds across all books → | Soccer vig deep-dive → | Best Soccer Odds →
MMA
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MMA only tracks moneyline — no spreads or totals. Sample sizes are smaller due to fewer events.
Full MMA odds across all books → | MMA vig deep-dive → | Best MMA Odds →
Bookmakers Tracked
The index dynamically discovers all bookmakers available through The Odds API across the us and us2 regions. This typically includes:
US Regulated: DraftKings, FanDuel, BetMGM, Caesars, BetRivers, Fanatics, ESPN BET, Hard Rock Bet, and more.
Offshore / Sharp: Bovada, BetOnline.ag, MyBookie, BetUS, LowVig.ag, BetAnySports, Pinnacle, and more.
Not every book offers odds on every event. The Events column tells you how much data backs each grade. A book graded on 50 events is less reliable than one graded on 500.
How We Calculate Vig
The pipeline:
Real odds from all discovered books across all in-season sports (moneyline, spread, totals)
↓
Convert American odds → implied probabilities
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Sum implied probabilities per event per book
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Overround = sum - 1.0 (e.g., 1.0476 - 1.0 = 4.76% vig)
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Average overround across all events → per-book grade
Data flows from The Odds API through a Cloudflare Worker cron that runs 3x daily. Sports, books, and markets are discovered dynamically — no hardcoded lists. When a new sport comes in season or a new book appears on The Odds API, pages update automatically.
Why Agents Care About Vig
For a human bettor, vig is a drag on long-term profitability. For an autonomous betting agent, it’s a routing parameter.
An agent plugged into the agent betting stack can consume vig data programmatically and make execution decisions:
- Order routing — Send NFL bets to the book with the lowest NFL vig, NBA bets to a different book. Per-sport rankings make this trivial.
- Threshold gating — Refuse to execute if the target book’s current vig exceeds a threshold (e.g., skip any book graded C or worse).
- Execution cost modeling — Subtract half the overround from expected edge to get net expected value. A 2% edge on a 6% vig book nets ~-1% EV after margin.
The AgentBets Vig API exposes all of this data via simple JSON endpoints. An agent running a Cloudflare Worker can fetch per-sport rankings and route orders — all in under 100ms at the edge.
Data Freshness
| Signal | Meaning |
|---|---|
| Snapshot timestamp | When the odds-ingest Worker last ran successfully |
| Updated 3x daily | Cron runs at 6 AM, 2 PM, and 10 PM UTC |
| Stale data persists | If the cron fails, last good snapshot keeps serving — no empty pages |
Use the vig index as a daily pricing reference, not a tick-by-tick trading feed.
Explore Live Data
The Vig Index is the summary layer. Below it sits a full dynamically generated odds infrastructure with 750+ pages updated from real data.
- Odds & Rankings Hub — The single entry point for all odds comparisons, vig rankings, and sportsbook matchups
- Live Odds Hub — Browse every sport, every book, and every head-to-head matchup
- Vig Rankings Hub — Per-sport, per-market, per-book vig analysis
- Best NFL Odds | Best NBA Odds | Best MLB Odds — Sport-specific rankings
- DraftKings vs FanDuel Odds — Head-to-head of the top two regulated US books
Keep Going
- Agent Betting Stack Overview — See where vig data fits in the full Layer 1-4 architecture
- Sharp Betting Strategies — Use low-vig books as a foundation for +EV betting
- Sportsbook API Integration Guides — Connect your agent to the books ranked here