MLB Spring Training presents one of the most challenging betting environments in all of sports. Unlike the regular season, where established rotations, set lineups, and 162 games of data create relatively efficient markets, preseason baseball is defined by uncertainty. Managers routinely pull starters after three or four innings, platoon minor leaguers alongside veterans, and treat games primarily as evaluation tools rather than competitions. This makes run lines and totals particularly volatile, as the quality of pitching and defense can shift dramatically from inning to inning. The games, played primarily in Arizona's Cactus League and Florida's Grapefruit League during February and March, attract far less public betting volume than the regular season, which limits the incentive for sportsbooks to sharpen their lines.
Vig on MLB Spring Training markets tends to run noticeably wider than what bettors encounter during the regular season. With less liquidity, fewer sharp bettors engaging the market, and inherently unpredictable lineups, sportsbooks build in extra margin to protect themselves from information asymmetry — a manager may know his lineup plan hours before the public does. Moneyline margins that might sit around 3-5% during the regular season can balloon to 6-10% or more in Spring Training, particularly on games featuring lesser-known pitching matchups. Early in camp, when rosters are at their largest and lineup decisions are most opaque, the vig tends to be at its widest. As Opening Day approaches and teams begin fielding more regular-season-caliber lineups in the final week of March, margins typically tighten modestly as the games become somewhat more predictable.
Bettors looking for edges in Spring Training should focus on a few key variables: confirmed starting pitchers and their projected pitch counts, the split between major league regulars and minor league invitees in a given lineup, and ballpark factors — particularly in Arizona, where dry desert air and smaller spring venues can inflate run totals. Home and away splits carry less weight than during the regular season since travel distances are short and fan atmosphere is minimal. The sharpest opportunities often emerge late in camp when one team is clearly playing its regulars while the opponent is still experimenting, creating mismatches that the wider vig may not fully account for.
Los Angeles Angels @ Los Angeles Dodgers
| Side | Market | Best Line | Worst |
|---|---|---|---|
| home | h2h | Bovada: +240 | +190 |
| away | h2h | LowVig.ag: -275 | -319 |
| home | spreads | Bovada: -125 (+2.5) | -140 |
| away | spreads | FanDuel: +106 (-2.5) | -102 |
| over | totals | LowVig.ag: -110 (+9.5) | -124 |
| under | totals | FanDuel: -110 (+9.5) | -120 |
| home | spreads | BetAnything: +125 (+1.5) | +106 |
| away | spreads | Caesars: -130 (-1.5) | -145 |
Frequently Asked Questions
What are the best MLB Preseason lines today?
The table below shows which sportsbook has the best available price on each side of every upcoming MLB Preseason event. Line shopping across multiple books can save you 1–3% per bet compared to sticking with a single sportsbook.
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.