Boxing presents a distinctive challenge for bettors because the sport's outcome variables are unusually concentrated. Unlike team sports with dozens of possessions or scoring opportunities, a single punch can render pre-fight analysis irrelevant. This volatility cuts both ways: moneyline markets on heavy favorites often carry enormous juice, while method-of-victory and round-group props can offer genuine value for bettors who study fighter tendencies closely. The market depth varies dramatically by card — a Canelo Álvarez or Tyson Fury headliner will feature dozens of prop options across books, while undercard bouts or regional title fights may offer nothing beyond a basic moneyline and over/under on rounds.
Vig in boxing tends to run wider than in major team sports, and there are structural reasons for this. Oddsmakers face thinner information environments — fight camps are secretive, public training footage can be misleading, and the sample size of bouts per fighter is small compared to a 162-game baseball season. Books compensate for this uncertainty by building in larger margins, particularly on lopsided matchups where the favorite sits at -800 or worse. The most inflated vig typically appears on method-of-victory and exact-round props, where the implied probabilities across all outcomes can sum to well over 120%. Comparing lines across multiple sportsbooks becomes especially critical in boxing because the spread between the sharpest and softest price on the same fighter can be significant.
Boxing has no traditional season — major bouts are scattered throughout the calendar year, though promoters tend to cluster marquee fights around holiday weekends (Cinco de Mayo, Mexican Independence Day weekend in September, and the November-December corridor). Odds competition tightens considerably around these tentpole events as books aggressively seek action and sharps move lines early. Key factors influencing odds include fighter age and inactivity (long layoffs are common and meaningful), weight class changes, stylistic matchups (southpaw-orthodox dynamics, pressure fighters versus counterpunchers), and the assigned judges, since hometown scoring bias remains a real and quantifiable phenomenon in boxing.
Cross-Sport Vig Comparison
Boxing averages 6.34% vig across 14 sportsbooks. Here's how that compares to other active sports:
| Sport | Avg Vig | vs Boxing |
|---|---|---|
| Boxing | 6.34% | — |
| CFL | 4.93% | 1.41% higher |
| NCAAF | 4.69% | 1.65% higher |
| NFL | 4.72% | 1.61% higher |
| NFL Preseason | 4.39% | 1.95% higher |
Vig Rankings
| # | Sportsbook | Avg Vig | Grade | ML | Spreads | Totals | Events |
|---|---|---|---|---|---|---|---|
| 1 | Pinnacle | 4.38% | B | 4.24% | — | 4.66% | 2 |
| 2 | DraftKings | 5.38% | C+ | 5.38% | — | — | 9 |
| 3 | BetUS | 5.43% | C+ | 5.26% | — | 6.65% | 14 |
| 4 | theScore Bet (ESPN Bet) | 5.47% | C+ | 5.47% | — | — | 15 |
| 5 | Hard Rock Bet | 5.81% | C+ | 5.81% | — | — | 3 |
| 6 | BetOnline.ag | 6.01% | C | 5.90% | — | 6.39% | 10 |
| 7 | LowVig.ag | 6.01% | C | 5.90% | — | 6.39% | 10 |
| 8 | FanDuel | 6.51% | C | 6.51% | — | — | 18 |
| 9 | betPARX | 6.57% | C | 6.57% | — | — | 2 |
| 10 | Bally Bet | 6.57% | C | 6.57% | — | — | 2 |
| 11 | BetRivers | 6.57% | C | 6.57% | — | — | 2 |
| 12 | BetAnything | 7.01% | D | 7.03% | — | 6.98% | 2 |
| 13 | BetMGM | 7.11% | D | 7.11% | — | — | 4 |
| 14 | 888sport | 9.88% | D- | 9.88% | — | — | 14 |
Frequently Asked Questions
Which sportsbook has the lowest Boxing vig?
Pinnacle currently has the lowest vig at 4.38%, 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 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.