Spread betting in League of Ireland football operates differently than in higher-scoring sports like basketball. A typical spread in Irish football might be set at -1 or -1.5 goals for the favored side, reflecting the generally low-scoring nature of the league. Taking a team at -1.5 means they must win by two or more goals for the bet to cash, which adds significant risk given that many League of Ireland matches are decided by a single goal or end in draws. The alternative -1 line introduces the possibility of a push, which can serve as a middle ground for bettors seeking some protection.
The spreads market tends to offer the most value when there's a clear mismatch — for example, when Shamrock Rovers or Shelbourne host a side fighting relegation. Bettors should monitor squad rotation during European qualifying rounds, as fixture congestion frequently dilutes the quality of domestic lineups for top clubs. In terms of vig, spreads in the League of Ireland typically carry slightly wider margins than the match result (1X2) market, largely because bookmakers have less liquidity and pricing data to work with in a lower-profile league. Comparing the effective vig across books becomes especially important here, as small differences in margin compound quickly over a season's worth of bets.
Cross-Sport spreads Vig Comparison
League of Ireland spreads averages 5.59% vig across 5 sportsbooks. Here's how that compares to other active sports:
| Sport | Avg Vig | vs League of Ireland |
|---|---|---|
| League of Ireland | 5.59% | — |
| NCAAF | 4.75% | 0.84% higher |
| AFL | 7.08% | 1.49% lower |
| MLB | 4.09% | 1.50% higher |
| MLB Preseason | 6.55% | 0.96% lower |
Vig Rankings
| # | Sportsbook | Vig | Grade | Events |
|---|---|---|---|---|
| 1 | BetOnline.ag | 4.14% | B | 5 |
| 2 | LowVig.ag | 4.14% | B | 5 |
| 3 | BetUS | 6.42% | D | 5 |
| 4 | BetAnything | 6.50% | D | 5 |
| 5 | Bovada | 6.73% | D | 5 |
Frequently Asked Questions
Which sportsbook has the lowest League of Ireland spreads vig?
BetOnline.ag currently has the lowest vig at 4.14%, 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 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 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.