BetMGM leads with 4.45% vig (B), followed by DraftKings at 4.90%.
MLB offers one of the most analytically rich betting environments in professional sports. With 162 games per team spread across a six-month regular season (late March through September), the sheer volume of action creates deep, liquid markets that reward disciplined bettors. Baseball's low-scoring nature — most games land between 6 and 9 total runs — means small edges in projection models compound over hundreds of opportunities. The moneyline dominates MLB betting in a way it doesn't in football or basketball, since point spreads (run lines) are almost always fixed at ±1.5, making the moneyline the primary vehicle for expressing an opinion on a game's outcome.
Vig on MLB moneylines tends to be tighter than in many other sports, particularly on games between evenly matched opponents. When a line sits near -110/-110 or in the -120 to +100 range, sportsbooks are competing aggressively and margins can compress to 2-3%. However, vig inflates noticeably on heavy favorites — a -200/+170 line carries a significantly wider margin than a -115/+105 line. Because MLB produces more lopsided matchups on any given day than the NFL or NBA (think an ace versus a back-end starter), bettors should be especially attentive to how different books price those mismatches. Comparing lines across multiple sportsbooks is where the most tangible savings occur.
Seasonal dynamics matter. Early in the season, oddsmakers rely more heavily on projections and preseason assumptions, which can create value before the market fully adjusts to roster changes, bullpen usage patterns, and true team quality. By midsummer, lines sharpen considerably as the sample size grows. The trade deadline in late July reshuffles rosters and can temporarily create mispriced lines. Beyond schedule flow, starting pitching is the single most influential factor in MLB odds — a late scratch can move a line by 30 cents or more. Weather conditions (wind direction, humidity, altitude), platoon matchups against left- or right-handed pitching, and bullpen fatigue from recent heavy usage all create edges that sharper bettors monitor daily.
MLB Sportsbook Vig Rankings
| # | Sportsbook | Avg Vig | Grade | 24h | Moneyline | Spreads | Totals | Events |
|---|---|---|---|---|---|---|---|---|
| 1 | BetMGM | 4.45% | B | — | 4.55% | 4.09% | 4.71% | 1 |
| 2 | DraftKings | 4.90% | B | — | 4.90% | — | — | 1 |
| 3 | ReBet | 8.67% | D- | — | 8.67% | — | — | 1 |
Upcoming Events
| Matchup | Time | Coverage |
|---|---|---|
| New York Yankees @ San Francisco Giants | Mar 26, 12:05 AM | 3 books |
Best Line Leaders
Which sportsbook offers the best odds most often across 1 events:
| # | Sportsbook | Best Lines |
|---|---|---|
| 1 | DraftKings | 1 |
| 2 | BetMGM | 1 |
Frequently Asked Questions
Which sportsbook has the lowest vig for MLB?
BetMGM currently has the lowest average vig for MLB at 4.45%, earning a grade of B.
How do sportsbook odds compare for MLB?
We compare 3 sportsbooks for MLB. The vig ranges from 4.45% (BetMGM) to 8.67% (ReBet).
Why do only 3 sportsbooks cover MLB?
MLB is a niche market compared to major sports like NFL or NBA. Fewer sportsbooks offer lines because betting volume is lower. The 3 books that do cover it are BetMGM, DraftKings, ReBet.
Why does MLB have unique vig patterns?
MLB betting revolves around the moneyline rather than point spreads (though run lines exist). This means vig varies significantly based on the matchup — a game between evenly matched teams will have much tighter vig than a heavy favorite vs underdog scenario.
When is MLB season?
MLB runs from late March through October, with the World Series typically ending in late October or early November. Spring training games begin in February but rarely appear on most sportsbooks. The long 162-game season means consistent odds availability for six months.
Which MLB market type offers the best value?
For MLB, moneylines on close matchups (both teams near even) tend to have the best vig. Run line (±1.5) vig is typically higher because it's a less liquid market. Totals vary based on the game but are generally competitive at sharp books.
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.
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 exceptional and rare — these are typically sharp-friendly books. A (2–3%) is excellent. B+ (3–4%) is above average. B (4–5%) is the industry standard for most recreational sportsbooks. C (5–6%) is below average. D (above 6%) indicates high-juice markets where bettors face a steep cost per wager.
- 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.