A moneyline bet in MLB preseason — commonly referred to as spring training or Cactus/Grapefruit League games — is a straightforward wager on which team will win the game outright, with no point spread involved. Odds are expressed as plus and minus figures relative to $100, with the favorite carrying a negative number and the underdog a positive one. Because baseball is inherently a low-scoring sport with tight margins, the moneyline is the default betting market, unlike football or basketball where point spreads dominate. In preseason, however, the moneyline carries significantly more uncertainty since managers freely rotate lineups, pull starters early, and give extended looks to minor leaguers competing for roster spots.
Strategy in this market hinges on information. Bettors who track announced lineups, monitor how deep into games starting pitchers are expected to go, and identify which clubs are prioritizing competitive results over pure evaluation gain a meaningful edge. The vig on MLB preseason moneylines tends to run higher than regular-season moneylines, reflecting the increased unpredictability and lower betting volume. Books widen their margins to protect against sharp action from bettors who've done their homework on lineup decisions. Comparing vig across sportsbooks is especially valuable here, as the spread between the best and worst prices can be substantial in a market with less liquidity and less competition among oddsmakers.
Analysis updated September 13, 2026. Odds data above refreshes hourly.
Cross-Sport moneyline Vig Comparison
MLB Preseason moneyline averages 5.51% vig across 15 sportsbooks. Here's how that compares to other active sports:
Vig Rankings
| # | Sportsbook | Vig | Grade | Events |
|---|---|---|---|---|
| 1 | BetAnything | 3.99% | B | 1 |
| 2 | LowVig.ag | 4.01% | B | 1 |
| 3 | BetOnline.ag | 4.01% | B | 1 |
| 4 | DraftKings | 4.33% | B | 1 |
| 5 | Bovada | 4.41% | B | 1 |
| 6 | Caesars | 4.51% | B | 1 |
| 7 | BetUS | 4.80% | C+ | 1 |
| 8 | MyBookie.ag | 5.03% | C+ | 1 |
| 9 | FanDuel | 5.13% | C+ | 1 |
| 10 | theScore Bet (ESPN Bet) | 5.28% | B | 1 |
| 11 | Hard Rock Bet | 5.77% | C | 1 |
| 12 | Fliff | 6.75% | D- | 1 |
| 13 | BetRivers | 7.82% | D | 1 |
| 14 | betPARX | 7.82% | D | 1 |
| 15 | ReBet | 8.92% | D- | 1 |
Frequently Asked Questions
Which sportsbook has the lowest MLB Preseason moneyline vig?
BetAnything currently has the lowest vig at 3.99%, earning a grade of B.
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.