Boxing presents a distinctive challenge for bettors because the sport's outcomes hinge on deeply individual variables — fighter styles, conditioning cycles, weight cuts, and the subjective nature of judging. Unlike team sports with large sample sizes and consistent schedules, boxing cards are assembled on an event-by-event basis, and fighters may compete only two or three times per year. This scarcity of data makes line-setting more art than science, which creates both risk and opportunity. The market depth varies enormously: a Canelo Alvarez or Tyson Fury headliner will feature dozens of prop options — method of victory, round betting, total rounds — while undercard bouts may offer only a moneyline. Round-by-round and method-of-victory props are where sharper bettors often find edges, as books have less modeling sophistication in these granular markets compared to the headline moneyline.
Vig in boxing tends to run wider than in major team sports like the NFL or NBA. Moneyline margins of 5–8% are common, and they can balloon past 10% on lopsided matchups where one fighter is a heavy favorite. Books price in extra juice to compensate for the inherent volatility and the thinner information environment. Prop markets — particularly round betting and exact method of stoppage — often carry even steeper margins, sometimes exceeding 15%. This makes comparing odds across sportsbooks especially valuable in boxing, where the difference between a -350 and a -300 favorite on the same fighter represents significant long-term value.
Boxing has no traditional season; major bouts are scattered throughout the year, though promoters tend to cluster marquee fights around holiday weekends — Cinco de Mayo, Mexican Independence Day in September, and the late-November/December window. These high-profile cards attract the most betting handle, which generally tightens the vig as books compete for action. During quieter stretches with lower-profile cards, margins tend to widen. Key factors that move boxing lines include training camp reports, weigh-in results (a fighter who looks drained at the scale is a red flag), late trainer changes, and stylistic matchup dynamics. A southpaw-orthodox clash, a pressure fighter versus a counterpuncher, or a significant reach disadvantage can shift odds meaningfully as public and sharp money interpret those dynamics differently.
Analysis updated October 11, 2026. Odds data above refreshes hourly.
↓ 7-day trend: Boxing average vig has improved by 0.09 percentage points over the past week (from 6.33% to 6.25%). Sportsbooks are tightening their lines — a good sign for bettors.
Cross-Sport Vig Comparison
Boxing averages 6.25% vig across 12 sportsbooks. Here's how that compares to other active sports:
Vig Rankings
| # | Sportsbook | Avg Vig | Grade | ML | Spreads | Totals | Events |
|---|---|---|---|---|---|---|---|
| 1 | Pinnacle | 4.12% | B | 3.96% | — | 4.76% | 4 |
| 2 | Bovada | 5.26% | C+ | 5.26% | — | — | 2 |
| 3 | DraftKings | 5.53% | C+ | 5.53% | — | — | 19 |
| 4 | theScore Bet (ESPN Bet) | 5.54% | C+ | 5.54% | — | — | 19 |
| 5 | Hard Rock Bet | 5.62% | C+ | 5.62% | — | — | 10 |
| 6 | BetOnline.ag | 5.72% | C+ | 5.56% | — | 6.52% | 19 |
| 7 | LowVig.ag | 5.72% | C+ | 5.56% | — | 6.52% | 19 |
| 8 | BetMGM | 6.27% | C | 6.27% | — | — | 2 |
| 9 | BetAnything | 6.37% | C | 6.37% | — | — | 2 |
| 10 | FanDuel | 6.38% | C | 6.38% | — | — | 20 |
| 11 | BetUS | 6.92% | C | 6.62% | — | 8.92% | 20 |
| 12 | 888sport | 11.50% | F | 11.50% | — | — | 10 |
Frequently Asked Questions
Which sportsbook has the lowest Boxing vig?
Pinnacle currently has the lowest vig at 4.12%, earning a grade of B.
Why does boxing have high vig?
Boxing odds carry higher vig because fights are infrequent, outcomes are unpredictable, and betting volume per event varies enormously. Championship bouts attract tighter lines while undercard fights may have vig above 8%. The moneyline-only nature of boxing also means one-sided matchups have especially wide margins.
When are boxing odds available?
Boxing doesn't follow a traditional season. Major bouts are scheduled throughout the year, with lines typically opening 2-4 weeks before fight night. High-profile matchups may have odds available months in advance.
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 every hour, on the hour (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 average vig: A+ (under 2%) is exchange-level pricing, A (2–3%) very competitive, B+ (3–4%) above average, B (4–5%) the industry standard, C+ (5–6%) slightly below average, C (6–7%) below average, D (7–8%) high vig, D− (8–10%) very high, F (10%+) predatory.
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, BetAnything). 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 every hour, on the hour (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.