↓ 7-day trend: Average vig has improved by 0.25 percentage points over the past week (from 5.08% to 4.83%). Sportsbooks are tightening their lines — a good sign for bettors.
The top 5 books are tightly clustered — only 0.42% separates them. Vig is trending down 0.07% since yesterday.
MMA stands apart from most major sports because of the sheer volatility built into every contest. A single punch, kick, or submission attempt can end a fight in seconds, making moneyline betting the dominant market and creating unique challenges for oddsmakers. Unlike team sports with large sample sizes and predictable scoring patterns, MMA fighters compete infrequently — often just two or three times per year — which limits the data available for modeling. This scarcity of data, combined with the sport's finish rate (roughly half of UFC bouts end before the judges' scorecards), means pricing fights accurately is genuinely difficult, and that difficulty can create opportunities for sharp bettors who do their homework on stylistic matchups.
Vig in MMA tends to run wider than in mature, high-volume markets like NFL or NBA. On a typical UFC main card moneyline, bettors can expect to see combined implied probabilities in the range of 105-110%, though this varies significantly by book and by fight. Undercard bouts and regional promotions often carry even steeper margins because books receive less sharp action to help correct their lines. The takeaway for bettors comparing odds across sportsbooks is that the spread between the best and worst available price on an MMA fight can be substantial — often several percentage points of implied probability — making line shopping particularly valuable in this sport.
The UFC operates nearly year-round, with events on most weekends, but not all periods are created equal for bettors. Major numbered pay-per-view cards and tentpole events like UFC 300 attract the heaviest betting volume, which generally tightens margins as books compete for action and sharps drive lines toward efficiency. Conversely, Fight Night cards and early prelim bouts tend to see softer lines with wider vig. Key factors that move MMA odds include late injury news, weight-cut issues (a brutal cut can dramatically affect performance), changes in training camps, and stylistic matchup dynamics — a wrestler facing a pure striker presents a fundamentally different puzzle than two grapplers meeting. Unlike outdoor sports, weather is rarely a factor since nearly all major MMA takes place in controlled arenas, but altitude (as seen in Mexico City events) has historically played a measurable role in fighter cardio and late-round performance.
MMA Sportsbook Vig Rankings
| # | Sportsbook | Avg Vig | Grade | 24h | Moneyline | Spreads | Totals | Events |
|---|---|---|---|---|---|---|---|---|
| 1 | BetOnline.ag | 3.84% | B+ | ↑ 0.02% | 3.84% | — | — | 42 |
| 2 | Pinnacle | 3.85% | B+ | ↑ 0.01% | 3.85% | — | — | 20 |
| 3 | Bovada | 4.15% | B | ↓ 0.28% | 4.15% | — | — | 11 |
| 4 | BetUS | 4.23% | B | — | 4.23% | — | — | 11 |
| 5 | DraftKings | 4.26% | B | ↓ 0.05% | 4.26% | — | — | 26 |
| 6 | betPARX | 4.90% | B | ↑ 0.02% | 4.90% | — | — | 6 |
| 7 | BetRivers | 4.90% | B | ↑ 0.02% | 4.90% | — | — | 6 |
| 8 | Bally Bet | 4.90% | B | ↑ 0.02% | 4.90% | — | — | 6 |
| 9 | Caesars | 5.00% | C+ | ↓ 0.53% | 5.00% | — | — | 23 |
| 10 | Hard Rock Bet | 5.00% | C+ | ↑ 0.07% | 5.00% | — | — | 22 |
| 11 | 888sport | 5.47% | C+ | ↓ 0.13% | 5.47% | — | — | 8 |
| 12 | FanDuel | 6.06% | C | ↓ 0.01% | 6.06% | — | — | 12 |
| 13 | BetAnything | 6.21% | C | — | 6.21% | — | — | 7 |
Upcoming Events
| Matchup | Time | Coverage |
|---|---|---|
| Mohammad Fahmi @ Assem Ghanem | May 24, 10:00 AM | 1 books |
| Jingnan Xiong @ Angela Hill | May 30, 8:00 AM | 8 books |
| Jaqueline Amorim @ Loma Lookboonmee | May 30, 8:00 AM | 8 books |
| Jesus Santos Aguilar @ Rei Tsuruya | May 30, 8:00 AM | 7 books |
| José Henrique @ Meng Ding | May 30, 8:00 AM | 6 books |
Best Line Leaders
Which sportsbook offers the best odds most often across 24 events:
| # | Sportsbook | Best Lines |
|---|---|---|
| 1 | BetOnline.ag | 16 |
| 2 | Pinnacle | 11 |
| 3 | DraftKings | 8 |
| 4 | Caesars | 7 |
| 5 | Bovada | 4 |
| 6 | Hard Rock Bet | 2 |
Frequently Asked Questions
Which sportsbook has the lowest vig for MMA?
BetOnline.ag currently has the lowest average vig for MMA at 3.84%, earning a grade of B+.
How do sportsbook odds compare for MMA?
We compare 13 sportsbooks for MMA. The vig ranges from 3.84% (BetOnline.ag) to 6.21% (BetAnything).
When do small vig differences matter for MMA?
The top two books (BetOnline.ag and Pinnacle) 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 MMA vig getting better or worse?
MMA vig is currently improving (decreasing). Average vig has shifted by 0.07 percentage points since yesterday. We track these changes daily to help bettors identify the best windows for placing wagers.
Why does MMA have higher vig than team sports?
MMA is an individual sport with unpredictable outcomes — one punch can end a fight. Sportsbooks compensate for this uncertainty with wider margins. Additionally, MMA events happen weekly rather than daily, so there's less consistent volume to drive competition.
When are MMA odds available?
UFC events run nearly year-round, with numbered PPV events roughly monthly and Fight Night cards filling the gaps. Lines typically open 1–2 weeks before each event. There's no traditional off-season, though the schedule is lighter in December.
Which sportsbooks offer the best MMA odds?
Pinnacle and BetOnline are generally the sharpest for MMA due to higher limits and tighter pricing. Recreational books like BetUS and MyBookie tend to have higher vig on UFC fights. However, MMA vig across all books is typically higher than team sports.
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.
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.