Spread betting in the League of Ireland works differently than in American sports like basketball or football, where large point totals create natural spread markets. In football, spreads — often called Asian handicaps — typically revolve around small margins like -0.5, -1.0, or -1.5 goals. A -1.5 spread on Shamrock Rovers, for example, means they need to win by two or more goals for the bet to cash. Because League of Ireland matches frequently produce tight scorelines, even a half-goal shift in the spread dramatically changes the risk profile, making line selection critical.
The spreads market tends to offer the most value when there's a significant quality gap between sides — think top-four clubs hosting newly promoted teams — where bookmakers may shade the moneyline heavily but leave slightly more room on the handicap. Bettors should track home and away form closely, as the league sees notable home-field advantages at smaller grounds. Regarding vig, spreads in the League of Ireland generally carry tighter margins than three-way match result markets, since the two-outcome structure reduces the bookmaker's built-in edge. However, vig can vary meaningfully between books, making direct comparison essential before placing a wager.
↓ 7-day trend: League of Ireland spreads average vig has improved by 2.36 percentage points over the past week (from 7.96% to 5.60%). Sportsbooks are tightening their lines — a good sign for bettors.
Cross-Sport spreads Vig Comparison
League of Ireland spreads averages 5.60% vig across 2 sportsbooks. Here's how that compares to other active sports:
| Sport | Avg Vig | vs League of Ireland |
|---|---|---|
| League of Ireland | 5.60% | — |
| CFL | 4.99% | 0.61% higher |
| NCAAF | 4.69% | 0.91% higher |
| NFL | 4.78% | 0.82% higher |
| NFL Preseason | 4.37% | 1.23% higher |
Vig Rankings
| # | Sportsbook | Vig | Grade | Events |
|---|---|---|---|---|
| 1 | Pinnacle | 4.31% | B | 5 |
| 2 | Bovada | 6.89% | C | 5 |
Frequently Asked Questions
Which sportsbook has the lowest League of Ireland spreads vig?
Pinnacle currently has the lowest vig at 4.31%, 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 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.